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Can Cats Eat Watermelon?

✓ Vet-referenced✓ Sources citedUpdated 2026-10-10

In moderation

Yes, in moderation

a small amount of seedless watermelon flesh is safe for cats. It is mostly water and sugar, so it is just a novelty treat.

Watermelon for cats at a glance

Can cats eat it?In moderation
CaloriesAbout 5 kcal per 1-inch watermelon cube
Main benefitHydrating
Main riskSeeds and rind can cause stomach upset or blockage
Kittens?In tiny amounts once on solid food; kittens have sensitive stomachs

How much watermelon can my cat eat?

Free · instant · based on veterinary formulas

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How much watermelon can a cat eat?

Vets recommend keeping all treats under 10% of daily calories. One 1-inch watermelon cube has about 5 kcal. The chart shows the most a typical spayed or neutered adult cat could have in a day if watermelon were the only treat.

Cat weightDaily treat budgetMax watermelon per day
6 lb (2.7 kg)18 kcal3.5 × 1-inch watermelon cube
8 lb (3.6 kg)22 kcal4 × 1-inch watermelon cube
10 lb (4.5 kg)26 kcal5 × 1-inch watermelon cube
12 lb (5.4 kg)30 kcal5.5 × 1-inch watermelon cube
14 lb (6.4 kg)34 kcal6.5 × 1-inch watermelon cube

Benefits and risks

Benefits

  • Hydrating
  • Not toxic to cats
  • Low calorie in small pieces

Risks

  • Seeds and rind can cause stomach upset or blockage
  • Sugar is unnecessary for cats
  • Can cause diarrhea

How to feed watermelon to your cat

  • Remove rind and seeds
  • Cut a few tiny cubes
  • Offer occasionally

What if my cat ate too much watermelon?

Eating more than the recommended amount usually causes nothing worse than an upset stomach: soft stool, gas or vomiting. Skip treats for the rest of the day, keep fresh water available and call your vet if vomiting or diarrhea lasts more than 24 hours or your cat seems unwell.

Check your cat's full daily needs with the cat food calculator.

Watermelon and cats: FAQ

Can cats have watermelon?

Yes, a small amount of seedless watermelon flesh is safe for cats. It is mostly water and sugar, so it is just a novelty treat.

Can cats eat watermelon rind?

No. It is hard to digest.

Why does my cat like watermelon?

Some cats like the texture or moisture. They cannot taste the sweetness.

Can cats eat other melons?

Cantaloupe is also fine in tiny amounts. Some cats are attracted to its smell.

Can kittens eat watermelon?

Yes, in very small amounts once they are eating solid food. Kittens have sensitive stomachs, so offer a tiny piece and stop if you see loose stool. Most of their calories should come from a complete kitten food.

More "can cats eat" guides

Browse lists: all fruits cats can eat · human foods cats can eat · foods cats can't eat

Sources

This guide is general information for healthy adult cats. Cats with medical conditions (such as diabetes, pancreatitis, kidney disease or food allergies) may need different advice from their vet.

Quick answer

In moderation

Yes, a small amount of seedless watermelon flesh is safe for cats.

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