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Can Guinea Pigs Eat Mint? Vet-Reviewed Nutritional Facts & FAQ

Rachael Gerkensmeyer

By Rachael Gerkensmeyer

mint leaves close up

Vet approved

Dr. Lorna Whittemore Photo

Reviewed & Fact-Checked By

Dr. Lorna Whittemore

MRCVS (Veterinarian)

The information is current and up-to-date in accordance with the latest veterinarian research.

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Guinea pigs are vegetarians through and through. They thrive off plant life and love munching on things like leafy greens, broccoli, cucumbers, bananas, and even fresh herbs. Of course, these are all foods that should only be served as supplements to their hay-centric diets. So, can mint be a healthy part of a guinea pig’s diet? The short answer is yes, guinea pigs can occasionally enjoy mint. Here is the lowdown on this delicious type of herb and feeding it to your guinea pig.

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What Are the Benefits of Feeding Mint to Guinea Pigs?

Both peppermint and spearmint are suitable food options for guinea pigs. Spearmint is the most common type of mint in the grocery store, so it is likely what your guinea pig would eat. Both spearmint and peppermint contain various antioxidants and minerals that can help boost your pet’s overall health. Here’s a breakdown of the notable minerals:

Beneficial Properties of Peppermint  Beneficial Properties of Spearmint 
Phosphorous Pantothenic acid
Zinc Riboflavin
Potassium Copper
Folate Manganese

There are also various vitamins packed into mint (both spearmint and peppermint) that can provide an even bigger boost to your guinea pig’s overall vitality. These include the following.

mint plant
Image Credit: photosforyou, Pixabay

1. Vitamin A

This is an important nutrient that guinea pigs need to maintain optimal vision and support body growth and development in their younger years. Vitamin A is also vital for supporting a healthy reproductive system, and it can boost the immune system and the functionality of essential organs like the liver. A lack of adequate vitamin A in a guinea pig’s diet can result in problems like weight loss, eye problems, and even the development of bacterial infections and dermatitis.

2. Vitamin C (Ascorbic Acid)

Mint contains vitamin C, which is important for guinea pigs to get because they cannot synthesize the nutrient themselves. It’s essential because it helps keep their immune system healthy so they don’t succumb to disease easily. Vitamin C is also responsible for a healthy coat and skin, proper digestion, strong joints, and proper development overall.

Essential for various functions, ascorbic acid helps a guinea pig avoid developing scurvy. Like vitamin A, ascorbic acid ensures proper reproductive functionality throughout a guinea pig’s life. It also helps with the regeneration of bone loss and makes it possible to effectively heal wounds.

black fur teddy guinea pig eating kale on the grass
Image Credit: Beartrix, Shutterstock

3. Fiber

Mint is filled with fiber, which helps a guinea pig maintain balanced levels of bacterial flora for optimal digestion. Fiber is also the material that guinea pigs grind their teeth on while they chew, which can help keep their teeth at an ideal length.

Many guinea pigs enjoy eating mint, so it can help keep meals interesting for them and reduce the chance that they will get bored and undereat when it’s mealtime.

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What Are the Possible Downsides of Feeding Mint to Guinea Pigs?

Mint is a safe food for guinea pigs to eat, but there are a few downsides to feeding this herb to your pet too often. First, mint does contain vitamins and minerals that guinea pigs need for good health but not in large quantities. Therefore, if mint is a significant part of your guinea pig’s diet, they won’t have enough room for foods that provide them with higher amounts of the nutrients that they need.

Second, mint contains high amounts of calcium compared to the other nutrients. Unfortunately, guinea pigs are prone to developing urinary stones. It’s thought that since calcium builds up in the kidneys where stones start to develop, and the stones are made up of excess minerals like calcium, a diet high in excess calcium contributes to this health problem.

guinea pig eating basil
Image Credit: TJ Images, Shutterstock

How Often Should Guinea Pigs Eat Mint?

Mint is a safe food for your guinea pig to eat, and it contains various beneficial nutrients. However, it can have adverse effects if it’s eaten too often. Therefore, it’s a good idea to limit your guinea pig’s mint intake to just two or three leaves once or twice a week. If you’re in doubt, contact your veterinarian for further guidance.

How Should Mint Be Prepared for Guinea Pigs?

Guinea pigs eat their food raw so there isn’t much to do when preparing mint for your furry little pet. You can simply pick a couple of leaves (stems and all) from the bunch, give them a quick rinse under cool water to get rid of dirt and tiny bugs, and then offer the leaves as a snack or part of a meal.

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In Conclusion

Guinea pigs are cute critters that enjoy eating all kinds of different plant foods, including mint (both spearmint and peppermint). Mint is a safe food for them to indulge in occasionally as part of a well-rounded diet. Mint happens to be inexpensive and easy to grow at home too. Just make sure it’s more of a supplement than a staple in your pet’s diet.

Featured Image Credit: Pixabay

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