Safe in moderation

Can cats eat watermelon?

Cats can have a small piece of seedless watermelon flesh. It's mostly water and natural sugar, so a cube or two makes a fine hot-weather treat in tiny amounts.

Not medical advice — general pet-safety info only. Confirm with your vet before changing your cat’s diet.

Updated Aug 3, 2026 Category Nutrition

Better everyday options

Watermelon is a fun occasional cube. These treats make an easier everyday reward.

Lickable cat treats

A lickable treat gives the same cool, refreshing appeal without seeds or rind to manage.

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Natural cat treats

Simple treats are an easier warm-weather reward than cut fruit.

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Low-calorie cat treats

Light treats keep fruity extras from becoming a daily sugar habit.

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How much is okay?

A small cube is plenty — watermelon adds hydration, not nutrition a cat needs.

Kitten / small adult
A small cube
Keep it tiny and occasional.
Typical adult
1–2 small cubes
Plain preparation only.
Large / big appetite
2–3 small cubes
Still an extra, not a meal.

Rule of thumb: treats of all kinds should stay under ~10% of daily calories.

How to prepare them

  • Remove seeds and rind completely.
  • Cut into small manageable cubes.
  • Serve chilled as an occasional warm-weather treat.

Risks & exceptions

  • Seeds and rind can cause digestive upset or a choke risk.
  • Too much fruit sugar can loosen stool.
  • It's easy to overserve since cats may enjoy the cold, wet texture.

Seedless flesh in small cubes is fine occasionally; rind and seeds are a skip.

If they ate too many

If they ate more than intended, watch for stomach upset and changes in behavior.

  • Soft stool

Call your vet / pet poison line if:

  • Repeated vomiting
  • Rind or seeds swallowed and signs of blockage

FAQ

Can cats eat watermelon rind?

No — it's tough to digest and not worth the risk.

Can cats eat watermelon seeds?

Skip them; stick to seedless flesh only.

Is watermelon good for cat hydration?

A cube is a fun treat, but fresh water is still the real hydration source.

Affiliate disclosure: we may earn a commission from product links. Safety guidance is editorial and may change — verify with your veterinarian for your cat.