<!-- Global site tag (gtag.js) Skip to Content

Can Guinea Pigs Eat Watermelon? Your questions answered.

Watermelon is one of those sweet fruits that are perfect on hot summer days to quench your thirst. Part of that reason is that watermelon is made up of 90% water.

You probably think this would be great for your guinea pig’s diet, which can be in moderation so it doesn’t cause health problems. This article will discuss the question Can guinea pigs eat watermelon?

Can Guinea Pigs Eat Watermelon?

Can guinea pigs eat watermelon?

Guinea pigs can eat watermelon as it is a safe fruit for them but only 1-2 times a week in small portions.

Watermelons have many excess sugars, even if they are natural. 

They have some valuable nutrients for your guinea pig’s diet, but again, it’s good not to overdo it, even on fruit.

We will explore this further and what their daily diet should look like.

How do you serve watermelon to guinea pigs?

  1. Wash the outside of the watermelon
  2. Get a cutting board and a shape knife and cut the watermelon into half, then cut off on the appropriate section to work with.
  3. Cut either watermelon flesh or rind into small pieces.
  4. Give it to your guinea pigs in their food bowl, served at room temperature.

Serving tips

It’s best to serve them in small cubes or thin slices at room temperature.

Watermelon can’t be served cold due to guinea pigs needing to keep their temperature regulated.

However, watermelon always needs to be stored in the fridge so it doesn’t start to build any bacteria, which wouldn’t be good for your guinea pig or yourself.

It’s a good idea to remove the cold watermelon for about 30 minutes before you will serve it to your guinea pig.

Can Guinea pigs have watermelon every day?

No, guinea pigs, in general, should not have fruit every day. It has too much sugar and only should be given 1/2 tsp to 1 tsp of fruit every few days.

Watermelon, due to its high water content, can be given in slightly bigger portions, like 1 TB, around once a week.

How much watermelon should a guinea pig eat?

While watermelons provide some hydration for both animals and people, pets should enjoy their recommended amount of watermelon to stay healthy.

Guinea pigs can enjoy watermelons but in moderation. 

A guinea pig should eat around 1 to 2 tablespoons in the form of small cubes of watermelon per week, which is about the size of two golf balls.

Too much watermelon can cause diarrhea in guinea pigs, so sticking to the recommended serving size is important.

Owners can mix watermelon with other fruits (a few times weekly) and vegetables to create a balanced diet.

What are some risks of too much watermelon in guinea pigs?

Watermelon can cause problems if given too often and in too large of quantities.


Watermelon is mostly sugar water, and excess water in guinea pigs can cause diarrhea, which can cause dehydration. 

Dehydration can cause serious complications for your guinea pig.

Weight gain-

Too much watermelon can also lead to weight gain, which can cause a host of problems for these little pets.


Diabetes can become an issue for your cavie if they become overweight and ingest too much sugar.

Therefore, it is important to feed watermelon to guinea pigs in moderation.

guinea pigs faqs cold fruit

Do guinea pigs enjoy the taste of watermelon?

Most guinea pigs will love these tasty fruits; however, not all guinea pigs have the same taste buds. 

Most love sweet treats, but you don’t need to force it if they don’t.

As always when you’re introducing a new food to your guinea pigs the best way to do so is to do it in very small amounts to let their digestive system have time to adjust to it.

What are the different parts of a watermelon?

Watermelon contains four different parts.

1. Green hard shell- the watermelon skin

2. Rind- the white fleshy part

3. Red watermelon flesh- the sweet part

4. Seeds- black and white seeds.

Can guinea pigs eat every part of the watermelon?

Guinea pigs can eat everything but the seeds. 

We will discuss in further detail how much, how to serve, and the benefits of each further in the article.

What nutritional value does watermelon provide guinea pigs?

Here are some key nutrients, but not all this fresh food provides.

  • Vitamin A
  • Vitamin B6
  • Vitamin C
  • Potassium
  • Zinc
  • Calcium
  • Phosphorus

All these nutrients can help with things like regulating blood pressure, helping with digestive problems, strengthening their immune system, and helping prevent a vitamin c deficiency (though this should never be a primary source for them to get their vitamin c.

There are also side effects to overeating watermelon. When feeding your guinea pig a healthy diet, these are always important things to weigh.

Watermelons add essential nutrients to guinea pigs, but this isn’t their only way to get those nutrients and shouldn’t be their main form.

Can baby guinea pigs eat watermelon?

No, baby guinea pigs should stick to their mother’s milk and Timothy hay or alfalfa hay if your vet is recommending it.

It’s best to hold off on fruit for these small animals until they’re bigger; plus, you don’t want them to get accustomed to sweet things all the time.

Guinea pigs can get picky about what they like to eat.

The less sugar, the better.

Can Guinea pigs eat watermelon seeds?

Watermelon seeds are a choking hazard to our little friends.

It’s extremely important to cut the watermelon into small pieces and examine each piece of fruit for any leftover seeds, even if you buy seedless watermelons. They can be sneaky.

Watermelon seeds are black in color, hard, oval-shaped seeds.

Watermelons also often contain little white seeds. If they are very small and soft, they can be tolerated by guinea pigs, but it’s best to remove them.

Can guinea pigs eat watermelon rind?

The watermelon rind is edible to guinea pigs and is actually the better option as it doesn’t contain the high sugar content that the flesh of watermelon does.

The rind of watermelon contains the most nutrients out of the whole watermelon, although it’s not as tasty as the juicy watermelon.

How often should you serve the watermelon rind to guinea pigs?

The rind of the watermelon should be served at the same frequency as the regular part of the watermelon which is as an occasional treat; like once a week.

Many people consider the rind of watermelon to be the white and green part. It’s only the white part that separates the green shell from the sugary fruit.

Can guinea pigs eat the green outer shell of the watermelon?

They can, but they probably shouldn’t. It is very fibrous, and they could have difficulty digesting it.

If you choose to give them the green part, make sure to wash it really well and cut it into small pieces.

Can Guinea pigs drink watermelon juice?

It is not recommended to give your guinea pigs watermelon juice.

Typically, juice removes all or most dietary fiber, leaving a lot of sugar and some vitamins.

Fresh fruits retain all the health benefits, but as we know watermelon should still be given in moderation, so watermelon juice is out of the question, even in small quantities.

Watermelon juice risks;

  • Diabetes
  • Tooth deterioration due to the sugar
  • Weight gain
  • It’s best to stick to fresh water and plenty of it.

Can guinea pigs have yellow watermelons?

Guinea pigs can eat yellow watermelons in the same amount as red watermelons.

Their nutritional profile is slightly different, yellow watermelon has more vitamin c, but it also contains slightly more sugar than red.

They are yellow and not red because they do not have lycopene; instead, they have beta carotene.

Just remember moderation and watch for the seeds.

Here are some tips when it comes to feeding your guinea pig watermelon-

Buying an organic watermelon is better than a conventional one due to the pesticides used. The fewer man-made things a guinea pig ingests, the better.

They can eat the rind and the red flesh, but the rind is better due to the lower sugar.

Always cut their servings small, so they don’t choke.

Make sure to remove all the seeds for your furry friend.

What is a typical guinea pig diet made up of?

A typical guinea pig diet consists of unlimited amounts of good quality timothy hay, vitamin c fortified guinea pig pellets, up to 1 cup of vegetables, and 1/2 t0 1 tsp fruit a couple of times a week.


Now that we know guinea pigs can eat watermelon let’s not forget that they should only have it in moderation one or max two times a week.

The rind portion is better for them as it has less sugar. 

Too much watermelon can cause guinea pigs to have an upset stomach and other health problems.

Guinea pigs should never be served watermelon with seeds and shouldn’t be given straight watermelon juice.

Want to learn more about guinea pigs? Check out these articles

Want to learn more about Guinea Pig nutrition?

Check out more articles here!

National Research Council (US) Subcommittee on Laboratory Animal Nutrition. (1995, January 1). Nutrient requirements of the guinea pig. https://www.ncbi.nlm.nih.gov/. Retrieved March 19, 2022, from https://www.ncbi.nlm.nih.gov/books/NBK231932/#:~:text=(1967)%20found%20that%20a%20dose,pigs%20fed%20a%20purified%20diet. 

Murphy, I. (2020, March 9). 8 differences in the benefits of yellow and red watermelons for health. Illianawatermelon. Retrieved March 19, 2022, from https://www.illianawatermelon.org/8-differences-in-the-benefits-of-yellow-and-red-watermelons-for-health/ 

Caring for your Guinea Pig – Oxbow Animal Health. (2016). Retrieved February 17, 2022, from https://www.oxbowanimalhealth.com/uploads/files/Guinea-Pig-Care-Guide.pdf

Vanderlip, S. D.V.M. (2015)  The Guinea Pig Handbook Barron’s Education Series, Inc. 

Birmelin, I. (2008) Guinea Pigs A Complete Pet Owner’s Manual (Barron’s Educational Series, Trans.) Grafe und Unzer Verlag GmbH (Original work published 2007)

Jennings, K.-A. (2021, November 8). Top 9 health benefits of eating watermelon. Healthline. Retrieved March 20, 2022, from https://www.healthline.com/nutrition/watermelon-health-benefits#TOC_TITLE_HDR_2