Can Guinea Pigs Eat Grapes?

Lauren Jones, VMD
By Lauren Jones, VMD on Nov. 22, 2023
Guinea pig pink background

With all of the fruits and vegetables available to our small pets, it is important to research and understand the benefits or dangers of each food. Have you ever wondered—can guinea pigs eat grapes?

Are Grapes Good for Guinea Pigs?

Grapes have potentially helpful health benefits, and guinea pigs can enjoy them under the right conditions. Luckily, grapes are not considered toxic like they are for dogs, and the fruit can be a fun treat for cavies.

Grapes contain antioxidants and promote free radical scavenging, which may be protective and beneficial in cardiac, inflammatory, neurologic, or arthritic conditions and may help fight certain cancers.

Some of these compounds include:

  • Quercetin

  • Resveratrol

  • Polyphenols

Grapes also contain high amounts of water, which helps your cavy stay hydrated, as well as potassium, an essential electrolyte.

Grapes also contain vitamin C, which is essential for the proper health of guinea pigs, as they cannot produce their vitamin C and require supplementation. Cup-for-cup, oranges and other citruses contain more vitamin C and may be a better overall treat for guinea pigs for this added benefit.

While grapes have these potentially useful antioxidant and anti-inflammatory properties, it’s unclear how much a guinea pig would have to eat to see these benefits.

Can Grapes Be Bad for Guinea Pigs?

Because grapes contain relatively high amounts of sugar, they are considered empty calories. If fed excessively, grapes may contribute to guinea pig obesity and potentially alter their gastrointestinal stability. Too many simple carbohydrates can cause gastrointestinal issues in guinea pigs.

A guinea pig’s diet should primarily consist of high-fiber, low-sugar food items, with fruits only making up 5%. The rest of the diet should be hay, vegetables, and a small amount of pellets. Treats, such as fruit, should be in moderation.

Can Guinea Pigs Be Allergic to Grapes?

A guinea pig can be allergic to a grape; however, this is uncommon. Mild allergic reactions may involve swelling of the face, hives, or diarrhea. More severe allergic reactions may cause problems breathing. Seek immediate veterinary care if your guinea pig struggles to breathe.

Too many grapes or introducing them too quickly may cause gastrointestinal upset, including diarrhea in guinea pigs. Use caution when introducing any new food product to decrease the chances of diarrhea or more severe illnesses.

Can Guinea Pigs Eat Grape Seeds?

Beneficial antioxidants are found in all parts of the grape—the skin, the flesh, and the seed. However, it is best to remove the seeds or only feed your guinea pig seedless grapes, as seeds can be a choking hazard.

Can Guinea Pigs Eat Grape Jelly?

Grape jelly contains additional sugar and other processed food and dyes, so it shouldn’t be shared with your guinea pig. It’s best to feed your guinea pigs only fresh grapes and in moderation. When it comes to a guinea pig’s diet, they are true herbivores, and fresh is always best!

Can Guinea Pigs Eat Wild Grapes?

Wild grapes may be OK to provide if you can ensure their safety. Unknown sources of wild grapes may have contamination or pesticides that could be harmful if fed to your guinea pig. Grapes grown in your garden will be safe to feed your pet, but always wash the fruit properly and inspect them for abnormalities.

How Many Grapes Can a Guinea Pig Eat?

Grapes should only be fed to a guinea pig occasionally—once or twice a week at most. One grape per sitting is plenty for your cavy.

How To Safely Feed Your Guinea Pig Grapes

Darker grapes have more health benefits, so opt for purple, red, or black grapes when you can. Green or white grapes are still OK and won’t harm your guinea pig.

More importantly, always remove the seeds or feed your cavy seedless grapes. Feel free to leave the skin on (this is where a lot of the nutrients are!), but cut the grape into halves or quarters to reduce the risk of choking.

Cooking, freezing, drying, canning, or otherwise altering fresh grapes will decrease nutritional value. However, guinea pigs may enjoy variation in how their food is presented. Consider dicing a grape or mushing it into a jelly (don’t add any extra sugar, though!). Your guinea pig may enjoy the new presentation and enrichment. Variety is necessary to keep a cavy happy and healthy.

What Other Fruits Can Guinea Pigs Eat?

Diet is essential when taking proper care of cavies, so make sure to consult a veterinarian to ensure you’re properly caring for your guinea pig. Treats, including fruits, should be less than 5% of their overall diet. When you do share fruits, guinea pigs enjoy include cantaloupe, berries, melons, and apples.

Featured Image: Irina Vasilevskaia/iStock / Getty Images Plus via Getty Images


Wright, DVM, DACVAA, Bonnie. International Veterinary Emergency and Critical Care Symposium 2017. Natural 'Drugs' for your Pain Management Toolbox. 2017.

Booth, Stephanie. WebMD. Health Benefits of Grapes. August 2022.


Lauren Jones, VMD


Lauren Jones, VMD


Dr. Lauren Jones graduated from the University of Pennsylvania School of Veterinary Medicine in 2010, after receiving her bachelor's degree...

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