There are not many health benefits when cats do eat watermelon. They may get some hydration, potassium or vitamin C from the fruit, but "the benefit is likely to be minimal," according to PetMD.

Cats can eat watermelon. But like any human food, be careful feeding them the fruit. Watermelon is non-toxic to cats and can be given as a treat from time to time, according to Purina.

If your cat is overweight or has diabetes, you shouldn't feed them watermelon. The sugar in the fruit is not good for certain cats and could lead to further health issues. How to feed cats watermelon ...