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Can Cats Eat Watermelon?
✓ Vet-referenced✓ Sources citedUpdated 2026-10-10
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In moderationYes, 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 |
| Calories | About 5 kcal per 1-inch watermelon cube |
| Main benefit | Hydrating |
| Main risk | Seeds and rind can cause stomach upset or blockage |
| Kittens? | In tiny amounts once on solid food; kittens have sensitive stomachs |
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 weight | Daily treat budget | Max watermelon per day |
|---|
| 6 lb (2.7 kg) | 18 kcal | 3.5 × 1-inch watermelon cube |
| 8 lb (3.6 kg) | 22 kcal | 4 × 1-inch watermelon cube |
| 10 lb (4.5 kg) | 26 kcal | 5 × 1-inch watermelon cube |
| 12 lb (5.4 kg) | 30 kcal | 5.5 × 1-inch watermelon cube |
| 14 lb (6.4 kg) | 34 kcal | 6.5 × 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.
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