The Ultimate Guinea Pig Food List

If you just want to know if a certain food is safe for guinea pigs, you can use our Can Guinea Pigs Eat Tool

This tool is for products you can pick up at your grocery store or local farmer’s market. However, there are some great all in one solutions such as the Timothy Formula. This food provides pretty much all the necessary oils fats and nutrients your little guy will need.

But keep in mind, it is important to switch things up every now then, so feel free to add anything from the approved list down below into your guinea pig’s diet.

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Here Is The Ultimate Guinea Pig Food List.

Due to guinea pigs being herbivores, this list only contains fruits, vegetables, and plants. I did not list every type of grass or weed, just the most common ones. If you there’s something you think should be added to the list, just let me know! Also, this table is sortable. Just click on the column heading to sort.

I have also reviewed a few other ‘all in one foods’ you can purchase from amazon, feel free to check that article out here.

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NameEdible?Notes
Aa ChoyYesAa Choy (Lactuca sativa) is fine.
AvocadosNoThe skins of avocados seem to be toxic to guinea pigs. The inside of an avocado is not toxic and can be eaten, but avocados are high in fat. The high fat content is not good for them and can slow down the digestive process.
AlfalfaYesGuinea pigs can eat alfalfa and often do as alfalfa hay. However, it is high in calcium which can lead to bladder stone formation, so give it sparingly. It is fine for young, nursing, or sick guinea pigs who need extra nutrition.
Alfalfa SproutsYesAlfalfa sprouts are safe for guinea pigs. They have a high amount of phosphorus, however, so I wouldn’t feed it more than a couple times a week.
ApplesauceMaybeGuinea pigs can eat applesauce, but the concern is the sugar content. Store-bought applesauce can contain 50% (or more) sugar. In that case, no – it’s not good for them. Check the sugar content to see if it’s something you want to give to your guinea pig. A better choice would be apples.

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ApplesYesGuinea pigs can eat apples. They can also eat the skin of the apple and the leaves of the apple tree, but the tree leaves are high in calcium, so limit their intake. They can also chew on the apple tree branches.

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ApricotsYesApricots are safe for guinea pigs. They can calso eat apricot tree leaves or chew on the branches.

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ArtichokesYesThere are 3 kinds of artichokes – the globe artichoke (the one you normally think of), the Jerusalem artichoke, and the Chinese artichoke. Artichokes are safe for guinea pigs. They are a little high in phosphorous, so only feed them a couple times a week at the most. Jerusalem artichokes are not toxic, but they contain high levels of sugar and phosphorus so they’re not an ideal food. Chinese artichokes are also high in sugar content and phosphorous, so they shouldn’t be given more than a couple times per week.

 

ArugulaYesArugula is a good food for guinea pigs. It offers a pretty good amount of Vitamin C, as well.

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Asian PearYesGuinea pigs can eat Asian pears. But like most fruit, because it contains sugar, limit it to a couple times a week.

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AsparagusYesGuinea pigs can eat asparagus. It is a nutrient-dense food that provides vitamins A and C.

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AtemoyayesThe atemoya is a hybrid between the cherimoya fruit and the sugar apple. They are not toxic but do contain a good bit of sugar, so limit their intake to once or twice a week.

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AzaleaNoEating azaleas can result in vomiting, diarrhea, or excessive drooling. Comsuming a lot could cause coma or death.
Bamboo ShootsYesGuinea pigs can eat bamboo shoots. They are high in Vitamin C. Bamboo doesn’t have a high nutritional level, but it does offer lots of fiber. They can also eat bamboo leaves.
BananasYesGuinea pigs can eat bananas. Because of the sugar content, feed just a couple times per week. They can also eat the banana peels and the banana plant leaves.

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BarleyYesGuinea pigs can eat barley. Barley provides Vitamin B3, manganese, selenium, magnesium, molybdenum, fiber, copper, Vitamin B1, phosphorus, and chromium.

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BasilYesBasil is safe for guinea pigs. It contains a good amount of Vitamin C, but it also contains high levels of phosphorous and calcium, so you should limit intake to a couple times per week in small amounts.
Bean sproutsYesBean sprouts are good for guinea pigs. They provide some Vitamin C as well.
BeetsYesBeets are safe for guinea pigs, but they have a high sugar content, so you should limit their consumption to a couple times per week at the most.

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Bibb LettuceYesBibb lettuce is a good food for guinea pigs.
BlackberriesYesGuinea pigs can eat blackberries. They have a good amount of Vitamin C as well.
BlueberriesYesBlueberries are good for guinea pigs. They are nutrient-dense and provide Vitamin C as well. As with all fruits, because of the sugar content, limit intake to a couple times per week.
Bok ChoyYesGuinea pigs can eat bok choy. It has Vitamins A and C, but it also has a good amount of calcium, so limit it to once or twice a week.
Boston LettuceYesGuinea pigs can eat boston lettuce. It is more nutritious than iceberg lettuce.
BoysenberriesYesBoysenberries are good for guinea pigs. They offer Vitamin C as well as well as very little calcium.
BroccoflowerOccasionallyThis cross between broccoli and cauliflower is a cruciferous vegetable. It is not toxic to guinea pigs, but it can cause gas and bloating and slow down the movement in the digestive system. If you do choose to feed it to your pet, do so in small amounts only and observe him closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered/absence of stool production.
BroccoliOccasionallyBroccoli is a cruciferous vegetable. It is not toxic to guinea pigs, but it can cause gas and bloating and slow down the movement in the digestive system. If you do choose to feed it to your pet, do so in small amounts only and observe him closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered/absence of stool production.

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Brussels SproutsOccasionallyBrussels sprouts are a cruciferous vegetable. It is not toxic to guinea pigs, but it can cause gas and bloating and slow down the movement in the digestive system. If you do choose to feed it to your pet, do so in small amounts only and observe him closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered/absence of stool production.

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BurdockYesBurdock is safe for guinea pigs.

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CabbageOccasionallyThere are several types of cabbages. Cabbage is safe for guinea pigs. However, cabbage is a cruciferous vegetable, and all cruciferous vegetables can cause gas and bloating and slow down the movement in the digestive system. If you do choose to feed it to your pet, do so in small amounts only and observe him closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered/absence of stool production.
CactusYesCactus fruit is safe for guinea pigs. The problem is the seeds scattered throughout the flesh. You shouldn’t feed the seeds to them, so take the time to pick them out before feeding the cactus to your guinea pig.
CantaloupeYesCantaloupe is safe for guinea pigs. It provides a good amount of Vitamin C.

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CarambolaYesCarambola (also called start fruit) is good for guinea pigs. It provides a good amount of Vitamin C.
CarrotsYesGuinea pigs can eat carrots. They are high in sugar, so limit the amount and don’t let them just sit and eat as many as they want.
CassavaNoRaw cassava contains cyanide, and guinea pigs don’t need cooked cassava. Guinea pigs should not eat cassava.
CauliflowerOccasionallyCauliflower is a cruciferous vegetable, and cruciferous vegetables can cause gas and bloating and slow down the movement in the digestive system. If you do choose to feed it to your pet, do so in small amounts only and observe him closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered/absence of stool production.
CeleriacYesCeleriac is also called celery root. It is safe for guinea pigs.

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CeleryYesCelery is safe for guinea pigs. It has a high water content, though, so could cause more frequent urination if fed in larger amounts. They can eat celery leaves, as well.
ChardYesThe most common type of chard is Swiss chard, but there are other types as well, such as rainbow chard or Ruby Chard. All chards are safe for guinea pigs and are very nutritious.
CherimoyaYesCherimoyas are safe for guinea pigs to eat. They offer Vitamin C as well.
CherriesYesCherries are a good guinea pig food but be sure to remove the stems and pits before feeding them to your pet. Because they are high in sugar, limit their intake to small amounts a couple times a week.
ChickpeasNoOther than green beans, guinea pigs generally should not eat beans. They contain a toxin named phytohaemagglutinin that can cause vomiting, diarrhea, dehydration, and even death in guinea pigs.
ChicoryYesChicory is safe for guinea pigs to eat.

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Chili PeppersNoChili peppers contain capsaicin which should not be fed to your guinea pig.
Chinese Red SpinachMaybeChinese Red Spinach or Malabar Spinach (Amaranthaceae amaranthus) is ok in small amounts if used rarely. It does contain a large amount of potassium and calcium which sometimes leads to kidney problems, so use sparingly.
ChivesYesChives are safe for guinea pigs. They contain Vitamin C, but they also contain a good bit of phosphorous, calcium, and sugar, so limit intake to small amounts once or twice a week. Some people say they are not safe because they belong to the allium family, but all research I’ve found states that they are safe.

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ChrysanthemumNoChrysanthemums are poisonous to guinea pigs.
CilantroYesCilantro is a healthy food for your guinea pig.
CoconutOccasionallyCoconut is not toxic to guinea pigs, but it has a high amount of fat and phosphorous so if you feed it to your guinea pig, do so sparingly.

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Collard GreensOccasionallyCollard greens are high in calcium, Vitamin A, and oxalates which isn’t very good for guinea pigs. Also, collard greens are a cruciferous vegetable. Like all cruciferous vegetables, they can cause gas and bloating. If you do choose to feed these vegetables to your pet, do so in small amounts only and observe closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered or absence of stool production.
CornYesCorn is safe for guinea pigs. Corn itself has a high starch content, however, so feed sparingly. They can also eat corn silk, corn husks (watch out for pesticides), and even corn flakes, corn stalks, and corn hay. Be careful there are no pesticides, fungus, or bacteria on the stalks, hay, or husks!
CranberriesYesCranberries are safe for guinea pigs. You can also give them cranberry juice if it isn’t loaded with sugar, and if you dilute it a bit with water.
CrocusNoCrocuses are not safe for guinea pigs. There are two Crocus plants: one that blooms in the spring (Crocus species) and the other in the autumn Colchicum autumnale). The spring plants are more common and are part of the Iridaceae family. These ingestions can cause general gastrointestinal upset including vomiting and diarrhea. These should not be mistaken for Autumn Crocus, part of the Liliaceae family, which contain colchicine. The Autumn Crocus is highly toxic and can cause severe vomiting, gastrointestinal bleeding, liver and kidney damage, and respiratory failure.
CucumberYesCucumbers are safe for guinea pigs, and most guinea pigs love them. They have a high water content so too much can cause bloating or diarrhea. They can eat the outer skins of the cucmber, as well. They are not nutritionally dense, however.
CyclamenNoThis flowering plant is toxic to guinea pigs. It can cause vomiting or even death.
DaffodilsNoDaffodils contain lycorine, an alkaloid with strong emetic properties (something that triggers vomiting). Ingestion of the bulb, plant or flower can cause severe vomiting, diarrhea, abdominal pain, and even possible cardiac arrhythmias or respiratory depression.
DaikonOccasionallyThe daikon radish is high in oxalates and shouldn’t be a part of your guinea pig’s diet. The green leaves of the plant can be fed to them in a small amount once a week or even less often.
DandelionOccasionallyDandelion greens are high in calcium, so their consumption should be limited to just once or twice a week. Dandelion flowers should only be given sparingly as an occasional treat.
DatesYesDates are safe for guinea pigs. They are high in sugar, however, so limit intake to once or twice a week at most. Be careful because some of the packaged dates you buy in the store are really coated with sugar. Stay away from those ones.

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DieffenbachiaNoEating this houseplant can cause oral irritation, drooling, nausea, vomiting and difficulty swallowing.
DillYesDill is safe for guinea pigs.

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DurianYesDurians are low in fat, phosphorus, and calcium, and provide some vitamin C. They’re kind of acidic, though, so limit to once or twice a week.

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EdamameNoEdamame are soybeans. Raw, unprocessed soybeans contain several substances that are very unhealthy for guinea pigs, including phytoestrogens, anti-enzymes, hemagglutinin, phytates and goitrogens. To read more about what raw soybeans contain see http://www.wereyouwondering.com/did-you-know-that-raw-soybeans-are-toxic/
EggplantYesEggplant doesn’t offer a lot of nutritional value, but it is safe for guinea pigs. It is a bit high in calcium and potassium so limit intake to once or twice a week.
EndiveYesEndive is a good food for guinea pigs and can be fed on a daily basis. Endive has many vitamins and minerals, especially folate and vitamins A and K. It is also high in fiber.

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EscaroleYesEscarole, also known as endive, is healthy for guinea pigs and can be fed daily.
Fava BeansNoGuinea pigs should not ingest fava beans. Fava beans contain many ingredients that are not good for guinea pigs. There are even a lot of humans who can\’t physically digest fava beans.
FennelYesFennel is a good food for guinea pigs. It contains no phosphorus, sugar or oxelates, and has low amounts of fat. It has a good amount of Vitamin C.
FigsYesFigs are a healthy food for guinea pigs. Fresh digs hve a high sugar content, so consumption should be limited to once or twice a week. Dried figs have less sugar content, however.
Garbanzo BeansNoOther than green beans, guinea pigs generally should not eat beans. They contain a toxin named phytohaemagglutinin that can cause vomiting, diarrhea, dehydration, and even death in guinea pigs.
GarlicOccasionallyI found much debate online about garlic for guinea pigs. There were many people saying it was not safe for guinea pigs but did not offer scientific proof. So I researched scientific studies and various scholarly books, and I believe garlic is safe for guinea pigs. \’Diseases of Domestic Guinea Pigs\’ by Virginia C. G. Richardson, MA, VetMB, MRCVS says it has several benefits for guinea pigs. Raw garlic has a high phosophorus and calcium content. For that reason, it should not be given often and only in very small amounts.
GingerYesI could not find any documentation that indicated that ginger might be harmful to guinea pigs. It is low in calcium and phosphorus and contains a small amount of fiber. It is safe for guineapigs.

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GooseberriesYesGooseberries are safe for guinea pigs. They offer Vitamin C. Because of their sugar content, feed once or twice a week.

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GrapefruitYesGrapefruit is safe for guinea pigs. It is high in Vitamin C.
GrapesYesGrapes are safe for guinea pigs. The seeds, however, are not good for them so give them seedless grapes or remove the seeds. It\’s best just to give a couple at a time.

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GrassYesGuinea pigs can eat most types of grass, including bluegrass, wheatgrass, orchard grass, bermuda grass, bromegrass, fescue, prairie grass, and other grasses. Grass provides carbohydrates, fiber, and some protein. Make sure the grass is clean and has no pesticides or other residues on it before feeding it to your guinea pig.
Green BeansYesGuinea pigs can eat green beans. They provide Vitamin C but they also provide a good amount of potassium and calcium, so for that reason, you should not give it too often. Green beans also contain oxalic acid, so only feed 1-2 beans at a time, and no more than 3 or 4 times a week. They can eat the leaves of the green bean plant, however.
Green OnionsNoGreen onions are not good for your guinea pig. He can eat the green tops, but there are better options to feed your guinea pig greens. They contain disulphide which can harm the red blood cells. It can destroy the cells’ ability to carry oxygen through your guinea pig’s blood stream, causing weakness or anemia. It can also limit your guinea pig’s ability to breathe correctly.
Green PepperYesGreen peppers are good for guinea pigs. You can feed them daily.

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GuavaYesGuavas are safe for guinea pigs. They have a lot of Vitamin C as well. Because of their sugar content, only feed guavas once or twice a week.
HoneydewYesHoneydew melon is safe for guinea pigs. Feed once or twice a week because of the sugar content.
HorseradishOccassionallyHorseradish is not a good food for guinea pigs because of it\’s pungent taste, but it is not toxic for guinea pigs. It does have a good amount of oxalates, however, so it shouldn\’t be given more than once or twice a month.
HyacinthsNoHyacinths are toxic to guinea pigs. Ingesting them can cause profuse drooling, vomiting, or even diarrhea, depending on the amount consumed.
Iceberg LettuceYesI say yes because it is not toxic for guinea pigs. However, there is almost no nutritional value in iceburg lettuce, so many owners advise against feeding it to them. Better options are Red or Green leaf lettuce, Bibb lettuce, Boston lettuce, Romaine lettuce, etc.
JackfruitYesJackfruit is fine for guinea pigs. One jackfruit has about 19g of sugar, though, so I wouldn\’t feed it to them all the time. Once a week is fine. 1 jackfruit has about 13mg of Vitamin C which is great.
JicamaYesJicamas are safe for guinea pigs, and they provide a good amount of Vitamin C. Because of it\’s sugar content, feed no more than once or twice a week.

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JujubeYesJujubes are safe for guinea pigs and offer quite a bit of Vitamin C. Because of their sugar content, feed no more than once or twice a week.
KaleOccasionallyKale is a cruciferous vegetable, and like most cruciferous vegetables, they can cause abdominal distress, bloating, or gas. If you do choose to feed these vegetables to your pet, do so in small amounts only, and observe closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered orabsence of stool production.
Kidney BeansNoRaw kidney beans are toxic to guinea pigs. They contain high levels of phytohaemagglutin, a dangerous toxin.
KiwiYesKiwis are safe for guinea pigs. Because of their sugar content, feed no more than once or twice a week.
KohlrabiYesKohlrabi is safe for guinea pigs and contains Vitamin C.
KudzuYesKudzu is safe for guinea pigs. Kudzu hay typically has a 15–18% crude protein content and over 60% total digestible nutrient value.
KumquatYesKumquats are good for guinea pigs. They have 53% Vitamin C, but they are high in calcium, so you should limit consumption to no more than once a week.
Leaf LettuceYesLeaf lettuce is safe for guinea pigs.
LeeksNoLeeks are an onion, and no onions are good for guinea pigs. They can cause gas and intestinal disturbances.
LemonsYesLemons are safe and contain Vitamin C. However, their acidic content can cause intestinal upset so feed small amounts, and not very often.

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LentilsNoLentil beans are not ideal for guinea pigs because they can cause abdominal distress, gas and bloating. Lentil sprouts are okay, however.
LettuceYesLettuce is safe for guinea pigs. Avoid iceburg lettuce, however. It is not toxic to guinea pigs, but it offers almost no nutritional value. Go with romaine, bibb, boston, or leaf lettuce instead.
Lima BeansNoLima beans are not good for guinea pigs. Raw lima beans contain linamarin, which when consumed, decomposes into the toxic chemical hydrogen cyanide.
LimesYesLimes are rich in Vitamin C. However, because of their acidity, feed sparingly to avoid intestinal distress.

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LoquatYesLoquats are safe for guinea pigs. They contain a good amount of Vitamin A, so don\’t feed too much, as too much Vitamin A can build up in the body.

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Lotus RootMaybeLotus root is iffy. It has a lot of calcium and phosphorus (100 mg per 100 g serving) which can lead to problems in guinea pigs if given in large amounts over a long period of time. So use sparingly.
LycheeYesLychees are safe for guinea pigs. They are high in Vitamin C. They are high in sugar, however, so limit to once or twice a week.
Malabar SpinachMaybeMalabar Spinach (Amaranthaceae amaranthus) is ok in small amounts if used rarely. It does contain a large amount of potassium and calcium which sometimes leads to kidney problems, so use sparingly.
Mandarin orangesYesMandarin oranges are safe for guinea pigs. Because of the sugar and acid content, don\’t feed more than twice a week – and only feed in small amounts.
MangoYesMangoes are safe for guinea pigs. Becasue of their sugar content, feed no more than once or twice a week.

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MintYesMint is safe for guinea pigs. Because of its aroma, they might not like it, though.
MulberriesYesMulberries are safe for guinea pigs. They offer a good amount of Vitamin C, as well.

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Mung BeansNoMung Beans are not good for guinea pigs, but mung bean sprouts are.
MushroomsOccasionallyThere are many types of mushrooms. Don’t ever let your guinea pig eat wild mushrooms. Mushrooms offer very little nutritional content, so it\’s not a good idea to give them mushrooms. But most types of mushrooms are not toxic to guinea pigs.
Musk melonsYesMusk melons are safe for guinea pigs to eat. They also offer Vitamin C.
Mustard GreensNoMustard greens are a cruciferous vegetables, and like most cruciferous vegetables, they can cause gas, bloating, and intestinal distress. If you do choose to feed these vegetables to your pet, do so in small amounts only and observe closely for signs of illness including: diarrhea, bloating of the abdomen, disinterest in or refusing food, malaise, and lowered orabsence of stool production.
Napa cabbageYesNapa cabbage is not toxic to guinea pigs, but it might cause intestinal distress or gas or bloating. Give in small amounts and watch for signs of intestinal discomfort.
Navy BeansNoNavy beans are not good for guinea pigs. Navy beans contain the toxin phytohaemagglutinin.
NectarinesYesNectarines are safe for guinea pigs and offer Vitamin C. Because of the sugar content, limit to once or twice a week.
OkraYesOkra is safe for guinea pigs to eat. It also contains some Vitamin C.
OlivesOccasionallyOlives are not toxic to guinea pigs, but they are cured with brine or lye and contain a lot of sodium, so it\’s not a good idea to feed them to your guinea pig. If you do, just give one or two, and not very often.
OnionsNoGuinea pigs should not eat onions. Onions are harmful to guinea pigs because they contain disulphide which can harm the red blood cells and ultimately destroy the cells’ ability to carry oxygen through the guinea pig’s blood stream. This can cause weakness and anemia. It can also limit a guinea pig’s ability to breathe correctly.
OrangesYesOranges are safe for guinea pigs and offer Vitamin C. Because of the sugar content, feed once or twice a week.
OrchidsNoThe U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Plant and Dairy Foods and Beverages lists 15 orchids as poisonous: Cymbidium aloifolium ,Cypripedium pubescens, Cypripedium species, Cypripedium spectabile, Dendrobium nobile, Eria stellata, Habenaria nigra, Neottia nidus-avis, Orchis coriophora, Orchid odoratissima, Orchis purpurea, Orchis simia, Phajus callosus, Phalaenopsis amabilis, Phalaenopsis lueddemanniana http://vm.cfsan.fda.gov/~djw/plantnam.html
PapayaYesPapayas are safe for guinea pigs and offer Vitamin C. Because of the sugar content, feed once or twice a week. Do not feed them the seeds, however. The skins are okay.
ParsleyYesParsley is safe for guinea pigs.
ParsnipYesParsnips are not toxic to guinea pigs. You can feed them parsnips once or twice a week.
Passion FruitYesPassion fruit is safe for guinea pigs. It offers Vitamin C. Because of the sugar content, feed once or twice a week.

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PeachesYesPeaches are safe for guinea pigs. It offers Vitamin C. Because of the sugar content, feed once or twice a week.
PearsYesPears are safe for guinea pigs. Because of the sugar content, feed once or twice a week.
PeasYesThere are several types of peas, like green peas, sugar snap peas, and snow peas. All of them are safe for guinea pigs. Stay away from split peas, however.

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PersimmonsYesPersimmons are safe for guinea pigs. They offer a good amount of Vitamin C.

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PicklesNoGuinea pigs should not be given any kind of pickled food.
PineappleYesPineapples are safe for guinea pigs. They offer a good amount of Vitamin C.
Pinto BeansNoPinto beans are toxic to guinea pigs. They contain phytohaemagglutin, a dangerous toxin.
PlantainsYesThere are plantains which are the fruit that look like bananas, and there is the grass called plantain. Both are safe for guinea pigs, however.

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PlumsYesPlums are safe for guinea pigs. They offer a good amount of Vitamin C.
PokeweedNoPokeweed is not safe for guinea pigs.
PomegranatesYesPomegranates are safe for guinea pigs. Becasue of their sugar content, feed no more than once or twice a week.
Potato ChipsNoPotato chips are not good for guinea pigs.
PotatoesNoPotatoes contain harmful toxins which could be poisonous to guinea pigs. They have little nutritional content and are high in carbohydrates. Potato peels are also not good for guinea pigs.
Prickly PearYesPrickly pears are safe for guinea pigs to eat.
PrunesNoPrunes are high in phosphorus which isn’t good for guinea pigs.
PomeloYesPomelos are safe for guinea pigs. They offer Vitamin C as well.

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PummeloYesPummelos are safe for guinea pigs. They offer Vitamin C as well.

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PumpkinYesPumpkin is safe for guinea pigs. It is high in Vitamin A and sugar, however, so you should limit intake to small amounts no more than once or twice a week.
QuinceYesQuinces are safe for guinea pigs and offer some Vitamin C.
RadicchioYesRadicchio is safe for guinea pigs.
RadishOccasionallyRadishes are very high in oxalates which can combine with calcium and form oxalate stones, or bladder stones. So feed radishes sparingly, like once or twice a month.
RambutanYesRambutans are fine for guinea pigs. I wouldn\’t give it more than 3 times a week though.

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RaisinsYesGuinea pigs can eat raisins, but they don\’t offer your guinea pig much nutritional value. They have a little bit of fiber and lots of sugar content. Feed sparingly.

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RaspberriesYesRaspberries are safe for guinea pigs.
Red PepperYesRed sweet peppers are good for guinea pigs. Red chili peppers are not.
Refried BeansNoGuinea pigs should not eat cooked foods or beans (other than green beans).
RhubarbNoRhubarb leaves contain poisonous substances, including oxalic acid, which is a kidney toxin, and a corrosive acid. Humans have been poisoned after ingesting the leaves. The stalks also contain oxalic acid, although in smaller amounts. Rhubarb is not safe for guinea pigs.
Romaine LettuceYesRomaine lettuce is safe for guinea pigs.
RutabagaYesRutabaga is safe for guinea pigs. It has a high amount of oxalic acid and sugar, so feed sparingly, like a couple times a month.
SauerkrautNoSauerkraut is too processed to be any good for guinea pigs. Feed fresh greens instead.
ScallionsNoScallions are not good for your guinea pig. He can eat the green tops, but there are better options to feed your guinea pig greens. They contain disulphide which can harm the red blood cells. It can destroy the cells’ ability to carry oxygen through your guinea pig’s blood stream, causing weakness or anemia. It can also limit your guinea pig’s ability to breathe correctly.
Sea VegetablesYesSea vegetables are safe for guinea pigs. There are many kinds available. Watch out for the salt content, though. They can eat it fresh or dried.
SeaweedYesSea vegetables are safe for guinea pigs. There are many kinds available. Watch out for the salt content, though. They can eat it fresh or dried.

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ShallotsNoShallots belong to the onion family, and onions just aren’t good for guinea pigs.
Snow peasYesSnow peas are safe for guinea pigs.
SorrelNoGarden sorrel is toxic to guinea pigs. Wood sorrel, however, can be eaten sparingly.
SoybeansNoRaw, unprocessed soybeans contain several substances that are very unhealthy for guinea pigs, including phytoestrogens, antienzymes, hemagglutinin, phytates and goitrogens. To read more about what raw soybeans contain see http://www.wereyouwondering.com/did-you-know-that-raw-soybeans-are-toxic/
SpinachYesSpinach is good for guinea pigs. It is high in Vitamin C. However, it is rather high in oxalates, so limit intake to a couple times a week.
SproutsYesThere are many types of sprouts, but they are almost all safe for guinea pigs, including bean sprouts, radish sprouts, wheatgrass sprouts, alfalfa sprouts, etc. Brussels sprouts, however, are not good for guinea pigs because they can cause intestinal distress.
SquashYesThere are many types of squash, and they are all safe for guinea pigs to eat. Most offer Vitamins C and A.
Star FruitYesStar fruit is safe for guinea pigs.

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StrawberriesYesStrawberries are safe for guinea pigs.
String BeansYesGuinea pigs can eat green string beans. They provide Vitamin C but they also provide a good amount of potassium and calcium, so for that reason, you should not give it too often. Green beans also contain oxalic acid, so only feed 1-2 beans at a time, and no more than 3 or 4 times a week. They can eat the leaves of the green bean plant, however.

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Sugar Snap PeasYesThere are several types of peas, like green peas, sugar snap peas, and snow peas. All of them are safe for guinea pigs.
Sweet PotatoesYesGuinea pigs can eat sweet potatoes. However, they contain a lot of starch and don\’t offer a whole lot in the way of nutrition, so limit intake to once or twice a month.

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Swiss ChardYesThe most common type of chard is Swiss chard, but there are other types as well, such as rainbow chard or Ruby Chard. All chards are safe for guinea pigs and are very nutritious.
TangeloYesTangelos are safe for guinea pigs. They provide Vitamin C. Feed once or twice a week.

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TangerineYesTangerines are safe for guinea pigs. Remove the seeds, though.
TaroNoTaro is not good for guinea pigs.
TomatilloMaybeThe leaves and stalk of the tomatillo plant are toxic to guinea pigs. The actual tomatillo fruit has no data on the effect on guinea pigs,so I am not sure if they should eat the fruit or not.
TomatoYesGuinea pigs can eat tomatoes. Be sure to remove the green top part, howeve,r because it is toxic. The tomato plant is also toxic.
TulipsNoTulips contain allergenic lactones. Eating them can cause profuse drooling, vomiting, or even diarrhea, depending on the amount consumed.
TurnipsYesGuinea pigs can eat turnips.

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Turnip greensYesGuinea pigs can eat turnip greens, but since they are high in calcium, limit intake to once or twice a week. Also be careful that it doesn\’t cause any intestinal discomfort, bloating or gas.
Ugly FruitYesUgly fruit is safe for guinea pigs.

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Water chestnutsYesWater chestnuts are safe for guinea pigs.
WatercressYesGuinea pigs can eat watercress. It contains Vitamin C.
WatermelonYesGuinea pigs can eat watermelon. Be sure to remove the seeds. Don’t feed too much or he may experience diarrhea.
Wax beansYesGuinea pigs can eat wax beans, but limit intake to once or twice a week and feed in small amounts.
Winter MelonMaybeWinter melon is questionable. It’s not going to hurt them, but one winter melon has 3000 mg of sugar in it which isn’t good for guinea pigs. Once in a while is fine, but I wouldn’t overdo it. I’d stick to once or twice a month and small amounts.
YamsYesGuinea pigs can eat yams. However, they contain a lot of starch and don\’t offer a whole lot in the way of nutrition, so limit intake to once or twice a month.
Yellow PepperYesYellow sweet peppers are good for guinea pigs.

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WheatgrassYesGuinea pigs can eat wheatgrass. Wheatgrass is a good source of potassium, a very good source of dietary fiber, vitamin A, vitamin C, vitamin E (alpha tocopherol), vitamin K, thiamin, riboflavin, niacin, vitamin B6, pantothenic acid, iron, zinc, copper, manganese and selenium, and has a negligible amount of protein (less than one gram per 28 grams).

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YuccaNoRaw yucca contains cyanide, and guinea pigs don\’t need cooked yucca. Guinea pigs should not eat yucca.
ZucchiniYesZucchini is safe for guinea pigs. It offers several vitamins and minerals.

Side note, if you are interested in getting hold of some treats for your little guy, check out this article here. It is really important that you give your guinea pig a diversified diet, don’t stick to just one type of food.

Try and look for something that has plenty of vitamin C or some natural probiotics within it. 

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