Can Guinea Pigs Eat Watermelon?

On a scorching summer’s day, there’s nothing more satisfying for us hoomans than sinking our teeth into a sweet, juicy slice of watermelon. But what about your little furball - would watermelon be hydrating and nourishing for them too?

Before you introduce anything new to your piggy’s diet, it’s always wise to double-check that it won’t cause them any unforeseen problems. The last thing we’d want is a poorly piggy!

First things first, do guinea pigs even like watermelon? Yes! Sweet, juicy watermelon is a mouthwatering refreshment for your hungry piggy to nibble on. But more importantly, is watermelon good for guinea pigs? The short answer is yes, but only a little.

While your floof will thank you for a small slice of this fruity goodness, they won’t be thanking you when they’re given too much! If your piggy over-indulges, it may cause tummy problems and even diarrhea. The high-sugar content could also lead to obesity and diabetes.

So before you start giving this treat to your piggies, read on to learn more about safely feeding watermelon to your furry friend.

Guinea pig being fed by hand.

Can Guinea Pigs Eat Watermelon?

Is it safe to give watermelon to your guinea pig?

Our beloved floofers are big fans of fresh vegetables, and as such, it’s easy to wonder whether fruit might be another great addition to their diet. However, fruit can contain amounts of sugar that go way above the recommended intake for piggies.

In short, it’s safe to give your guinea pig a small slice of watermelon to enjoy but only in moderation.

A piggy’s diet should mainly consist of fresh hay, grass, high-quality pellets, and some nutritious veggies. Offering a small fruity snack from time to time can have health benefits as well as being an indulgent treat, and thankfully won’t do them any harm. So feel free to keep treating your piggies!

Watermelon slices on a plate.

The risks of giving watermelon to your guinea pigs

As with most things in life, too much of a good thing can be… well, not so good. Once you see your small floof happily munching away at their watermelon, you might be tempted to let them eat it all. But every responsible piggy parent knows that their piggies’ health comes first and that sometimes means being strict with their diet. Too much watermelon can cause your poor furry friend an upset tummy. Not good!


Piggies are sensitive souls, and their stomachs are no exception. Although a little piece of watermelon may seem like a relatively small amount to us, it’s a lot of sugar for their little tummies to consume. If eaten in excess, this can make them put on weight or even develop severe health conditions like diabetes.


While watermelon seeds aren’t toxic for guinea pigs, they’re a choking hazard. To ensure a risk-free melon-eating experience, always remove any seeds (particularly the black ones) before handing a chunk to your furry friend.

Chemicals and pesticides

Harsh chemicals and pesticides are often used to treat watermelons and they can cause an upset stomach for your piggy. Ideally, it would be better if you gave your floofer only organic watermelon as that’s unlikely to contain any of these chemicals.

If that’s not possible, just give the skin an extra thorough rinse under the tap before offering any rind to your eager pig. This should remove any nasties before they start nibbling.

How often can guinea pigs eat watermelon?

‘In moderation’ is all well and good, but what exactly does that mean?

The bottom line is clear: watermelon shouldn’t be a major part of your cavy’s diet, due to the health risks we discussed. A safe and nutritious amount of watermelon to give your piggy would be one small slice per week.

How to safely give watermelon to your guinea pig

Firstly, don’t forget to remove the seeds of a watermelon before giving it to your sweet floof. This ensures they don’t get stuck in their throat and become a choking hazard! 

Also, as you would before eating anything yourself, make sure that fresh fruit hasn’t perished or gone bad. Rotten watermelon won’t do your piggy’s insides any good!

How to give watermelon pulp to your guinea pig

Prepare your piggy’s fruity snack by cutting the flesh of the watermelon into small pieces. You’ll want to give your pig manageable-sized chunks to enjoy!

How to give watermelon rinds to your guinea pig

Before serving it to your guinea pig, wash the watermelon rind thoroughly to remove any nasty chemicals. You should also cut it up into small pieces or thin slices to make it easier to eat.

Watermelon rinds on a plate.

Benefits of Watermelon for Guinea Pigs

Too much watermelon may cause your cavy some unwanted problems, but a little can do wonders! When eaten in moderation, watermelon can be a pawsome source of goodies like vitamins, minerals, and antioxidants that your piggy needs to thrive.

Vitamin C

Like us, our piggy pals don’t naturally produce Vitamin C, so they are totally reliant upon their diet for this essential nutrient that protects their immune system and oral hygiene. If your cavy doesn’t receive enough of this vital vitamin, they can develop serious health problems like scurvy (sadly one of the most diagnosed diseases in guinea pigs!).

While watermelon does contain Vitamin C, it’s worth bearing in mind that there are other foods that contain it in higher amounts, like kale or yellow bell peppers. So these veggies may be a better overall choice! 

Vitamin A and antioxidants

Watermelon is a good source of Vitamin A, which supports your piggy’s eye health and vision. It’s also rich in antioxidants like lycopene, which helps your floofer feel their best by improving overall health, boosting immunity, and fighting diseases within the body.


We all need to keep hydrated in the sweltering summer months, and your guinea pig is no exception! Watermelon has a high water content, which makes it the perfect snack for quenching your floofer’s thirst on hot days.


This tasty fruit is loaded with potassium, which is an excellent nutrient for piggies as it helps regulate fluids in their bodies. This mineral also prevents the development of kidney stones, which is sadly a common issue for guinea pigs.


We need to ensure little cavies grow up strong, and this starts with their bone health. Fortunately, watermelon is full of magnesium, which helps their bones absorb all-important calcium.


Like magnesium, phosphorus works hard to keep your guinea pig’s bones and teeth healthy, as well as maintain their nervous system. It also performs the important function of flushing out waste and repairing damaged tissues in your piggy’s body.


Fiber is important to keep hoomans regular, and our furry friends are no different! Watermelon (in particular the rind) contains a good amount of fiber, which prevents uncomfortable constipation and improves your floofer’s overall gut mobility.

Guinea pig next to food bowl.

Guinea Pigs and Watermelon FAKs - Frequently Asked Kavees 

Can guinea pigs eat watermelon rind?

Yes! Guinea pigs can eat watermelon rind. In fact, this part of the watermelon is actually better for them than the delicious fleshy pulp as it’s lower in sugar and contains more fiber.

Can guinea pigs eat watermelon seeds?

No. You should avoid giving watermelon seeds to your guinea pig because they present a choking hazard. Their size makes them likely to get dangerously lodged in your piggy’s throat. Just make sure you remove them before you offer this tasty snack!

Do guinea pigs like to eat watermelon?

In general, absolutely! Guinea pigs tend to have a sweet tooth, just like us hoomans. However, remember that every piggy is different, and some might just not like it as much as others. You may find that your furry friend prefers the rind or the pulp - you should be able to tell pretty quickly by how enthusiastically they nibble on it!

Can I give a watermelon smoothie to my guinea pig?

It may sound like the perfect refreshment on a balmy summer’s evening, but hold off on sharing a watermelon smoothie with your guinea pig! Watermelon loses its fibers once blended, so a smoothie would only overload your piggy with sugar and could cause them harm.

Can guinea pigs eat frozen watermelon?

Guinea pigs have sensitive tummies, so we wouldn’t recommend giving them frozen watermelon. It could cause a stomach upset and even diarrhea. Watermelon is best for your furry friend when served at room temperature.

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