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Can cats eat watermelon?

A little

Seedless flesh, a cube or two — it's mostly water.

How much

Up to per day 20g about 2 pieces · 1 bite-size cube ≈ 10 g

4 kg adult cat, treats ≤10% of ~200 kcal/day

PreparationRemove all seeds and rind; dice.

Why

Over 90% water, so at most a little extra hydration in summer. Seeds can obstruct and the rind is indigestible.

If your cat has a condition

  • Kidney disease OK to give Lower than the 2,000 mg/1000kcal kidney-diet line. Phosphorus 387 mg/1000kcal
  • Diabetes A little At this portion it is only 1.6 g of carbohydrate. Carbs 100% of calories
  • Heart disease (HCM) OK to give Low in salt. Sodium 0 mg/1000kcal
  • Urinary stones OK to give No specific stone concern known — water intake matters more.

Nutrition per 100 g

Nutrients per 100 g, with phosphorus also shown per 1000 kcal
Calories31 kcal
Protein0.79 g
Fat0.05 g
Carbohydrate7.83 g
Phosphorus12 mg 387 mg/1000kcal
Sodium0 mg
Potassium109 mg

Source: Korea MFDS Food Nutrient Database — 수박_적육질_생것

SourcesReviewed 2026-10-24

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