Fruits
Can cats eat watermelon?
Seedless flesh is non-toxic and hydrating; seeds and rind cause problems.
Portion: 2–3 small cubes, once in a while.
The short answer
Yes — a few small cubes of seedless, rind-free watermelon are a safe occasional treat. It's about 92% water, so it can be a refreshing summer snack. Remove every seed and all of the rind, and keep it to a couple of bites; the sugar and water load can upset a cat's stomach.
Why the verdict
Watermelon flesh contains nothing known to be toxic to cats. Seeds can cause intestinal irritation or, in quantity, obstruction; the tough rind is hard to digest. The fruit's sugar is the main reason to limit portions.
How to prepare it
- Remove all black and white seeds.
- Cut away the rind entirely.
- Serve plain, fresh cubes about 1 cm across.
- No watermelon candy, sorbet or flavoured drinks.
Signs of trouble
- Diarrhoea
- Vomiting
- Signs of blockage: straining, lethargy, no appetite
Watermelon & cats: FAQ
Can cats eat watermelon rind?
No. It's tough and fibrous and can cause stomach upset or blockage.
Are watermelon seeds dangerous for cats?
They're a GI irritant and potential blockage risk. Always remove them.
Can watermelon help a cat stay hydrated?
A little, but fresh water and wet food are far better sources of hydration.
Related foods
See every food that’s toxic to cats →
Sources
- ASPCA — Toxic and Non-Toxic Plant List — Cats (accessed 2026-09-29)
Last updated 2026-09-29. We are not veterinarians: this guide summarises published veterinary references and is not a substitute for advice from your vet. See our methodology and disclaimer.