The chopped water melon skins(put into the freezer first),

and the cooked radishes are the best! Also add the water to the food every time, to prevent kidneys failure! The dogs and cats usually do not drink water, unless they feel thirsty. That 's not enough! That 's why they always got kidneys issue, and die early. Always check their noses, to make sure that they are cold, smooth and wet.