Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Eat Watermelon? Vet Approved Nutrition Facts & FAQ

Can Cats Eat Watermelon

During the hot summer months, a slice of watermelon always sounds good. While humans enjoy it and can get plenty of benefits from this tasty snack, can cats eat watermelon? The answer is yes, cats can eat small amounts of watermelon. Let’s find out more in this article.

divider 3 paws

Do Cats Like Watermelon?

Some cats will love to nibble on watermelon, while others will turn their nose up at something so different. Either way, watermelon provides nutrients that cats can benefit from, like vitamin A and lycopene. The high water content can provide much-needed hydration during hot weather.

If your cat does like watermelon, it would be for the texture or the simple novelty of licking it—but not its sweet taste. Research has shown that cats can’t taste sweet foods the way we can, because they have no receptors for sweetness on their tongues. So, we really have no way of knowing what watermelon tastes like to a cat.

cat about to eat a watermelon
Photo Credit: Skarynka Alena, Shutterstock

Can Cats Be Allergic to Watermelon?

Anytime you feed your cat a new food, you may be concerned about possible allergies and adverse reactions. Rest assured, cat food allergies are extremely rare, with only 1% of all cats being allergic to some type of food. Furthermore, the most common foods that cats are allergic to are beef, dairy, fish, and chicken.

Signs of a food allergy in cats include excessive itching and gastrointestinal issues. If you suspect your cat had a reaction to watermelon, call a vet for guidance.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

Health Concerns About Watermelon for Cats

Watermelon’s sugar content makes it unhealthy to give to cats with diabetes or cats that are obese. You should also avoid giving your cat watermelon—or any other people food—if they are on a prescription diet.

watermelon-pixabay
Photo Credit: congerdesign, Pixabay

How Much Watermelon Can a Cat Have?

First and foremost, remember the adage, “Everything in moderation.” Watermelon isn’t something your cat should eat every day. Two dietary concerns with feeding a cat watermelon are calories and sugar. For reference, ¼ cup of diced watermelon contains 12 calories and 2.36 grams of sugar. For a cat, those small numbers have a big impact.

Watermelon, table scraps, and commercial cat treats—really anything other than cat food—should make up less than 10% of your cat’s daily caloric intake. A vet is your best resource for how many calories your pet needs, but this cat daily calorie requirement chart is a good reference.

For example, a healthy, 10-pound neutered adult cat should eat 262 calories each day, of which 26 calories could be a treat like watermelon. However, ½ cup of watermelon is too much for a cat, as you also have to consider the sugar content. As an obligate carnivore, your cat’s digestive system is designed to process animal protein, not sugar. Too much watermelon can throw their digestive system for a loop and not in a fun rollercoaster way!

So, how much watermelon can you offer your cat? Only as much as they can eat in a bite or two. A good serving size for most cats would be the size of a pair of dice. You can make watermelon last longer by giving your cat frozen watermelon.

How to Feed Watermelon to a Cat

You should only give your cat the flesh of a watermelon. Remove the rind and any seeds, as both can be difficult to digest.

Are Watermelon Seeds Toxic for Cats?

Many of us were told growing up that if we swallowed a seed while we ate the watermelon, it would take root in our stomachs. This is definitely not true for humans and isn’t for cats, either! However, watermelon seeds are big enough to present a choking hazard for most cats so it’s best to avoid them.

You may have also heard that some fruit seeds contain trace amounts of poisonous cyanide. According to a study, there is 0.79mg±0.01 cyanide per 100 g of watermelon seeds. On the contrary, roasted watermelon seeds are a popular human snack. That being said, you shouldn’t feed your cat watermelon seeds as they have the potential to cause an upset stomach. If your cat does manage to eat a seed or two, monitor them closely and check for signs of an stomach upset.

divider 3 paws

In Summary

It is fine to give your healthy cat the occasional small chunk of watermelon. Be sure to factor these calories into your cat’s daily intake. Obese cats and those with diabetes should not have watermelon due to the high sugar content. Remove the rind and seeds before giving watermelon to your cat.


Featured Photo Credit: Ruslana Chub, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

10 Best Diabetic Cat Foods in Canada in 2026: Reviews & Top Picks

When your cat gets diagnosed with diabetes, it can be scary, but diabetes isn’t a life-limiting illness if it’s properly managed. A huge...

Why Do Cats Groom Humans? 8 Vet Reviewed Reasons

You can be sitting on the couch and scrolling on your phone when, all of a sudden, you start to feel an unusual...

17 Lazy Cat Breeds Who Love to Chill (With Info & Pictures)

Watching a cat race around the house having a great time is fun, but it isn’t for everyone. Yes, there are cat lovers...

Can Cats Eat Quail Eggs? Vet-Approved Nutritional Benefits & Facts

As obligate carnivores, it’s no wonder that cats absolutely love any product that comes from an animal, including dairy! Of course, that doesn’t...

More related

How To Choose A Kitten From a Litter: 6 Vet-Verified Traits To Look For

Adopting a kitten is a life-changing event. The young cat you bring home today will hopefully be with you for the next 15–20...

9 Ways Kids Can Raise Money to Help Cats: Fun & Creative Ideas

Any cat owner will tell you their pets are valued like family members because that’s exactly what they are. Unfortunately, not all cats...

15 Surprising Facts About Kittens That Might Surprise You

Since kittens are sweet, innocent, and immeasurably adorable, it’s hard not to fall in love with them. Youth is a precious time for...

Male vs. Female British Shorthair: Principal Differences (With Pictures)

Our beautiful friends from across the pond make great pets, as any British Shorthair owner can tell you. But if you’re thinking about...

Keep reading

When to Euthanize a Cat? Vet-Reviewed Factors & FAQ

Watching a beloved family pet get old can be hard. As cats age, they will grow weaker and skinnier. Their behavior might change. They might not be the same cat that you used to know when they were younger. In...

a sick siberian cat being carried by owner

How to Give Subcutaneous Fluids to a Cat? 9 Vet-Approved Steps to Follow

Keeping our pets healthy is of vital importance, and sometimes, we need to step outside our comfort zones to provide our pets with the treatment that they need. One example of this is giving subcutaneous, or Sub-Q, fluids. These are...

close up IV saline drip

Is Your Cat Constipated? 12 Simple Remedies Vets Recommend Trying at Home

Few things worry cat parents more than when their kitty can’t go. Constipation is one of the most common digestive issues cats face — and one of the most uncomfortable. While some cases are mild and manageable at home, others...

cat outside the litter box

Can Cats Drink Coconut Milk? Vet Approved Facts & FAQ

It’s a tale as old as time—a cat’s thirst for milk. But with advancements in feline nutrition, we know that cow’s milk is actually bad for cats. So, in an attempt to give your kitty a cool sip of milk—what...

Can Cats Drink Coconut Milk

Why Do Cats Put Toys in Their Food Bowl? Behavior Explained

Cats are curious, funny little creatures that sometimes do the strangest things. They can stare at nothing, hide in the oddest places, bring unwanted gifts to their owners, and place their toys in their bowls. If you’re curious about this...

little red ginger striped kitten playing with duck toy

How to Tell if Your Cat Was Poisoned: 8 Vet-Reviewed Signs

If your cat is acting strange and exhibiting unusual behavior, it may be due to poisoning. Knowing the signs of poisoning will help you identify the problem in time and react accordingly. Of course, if you suspect your cat has...

vet checking up the cat

Why Does My Cat Burrow Under Blankets? 7 Vet-Verified Reasons

Kitties have some pretty interesting mannerisms. They’re always doing some quirky behavior that, as humans, we can barely understand. If you have a cat that likes to tunnel or weave underneath your blankets, you might wonder what would prompt this—because...

Cat hiding under the blanket

Why Does My Cat Only Eat Wet Food? Vet Reviewed Facts & Suggestions

You know you’re a good cat parent when your low-budget can of soup costs less than your cat’s can of wet food, which is $3 a tin. Once you introduce wet food to a cat, some felines refuse to return...

Cat-eating-wet-tuna-food-from-the-white-plate

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.