"One of the most common drinks humans and athletes use to rehydrate themselves is Gatorade."
"While a little amount of Gatorade would not do any harm to a cat, a larger amount of it could cause some health issues."
A dehydrated cat is not getting the amount than he is needs. However, it’s not just the lack of water that causes dehydration, but also the loss of essential minerals, such as sodium, potassium, and chloride."
"Some cats will also enjoy drinking cat-safe milk, so you might want to try it out. However, don’t just offer them any milk, especially those that are made for human consumption."
"Everyday, a cat should consume 3.5 to 4.5 ounces (103.5 to 133 ml) of water per 5 pounds (2.26 kg) of weight. That said, you need to adjust the amount depending on your cat’s weight."