The kitty in our fanart Orange Cat Drinks Milk Sticker is so thirsty - it will drink the whole bottle of milk right now if you don't stop it. As you know, milk contains fat and protein, which is enticing to them. However, it's generally recommended to provide cats with fresh water for their hydration needs, as it is the most suitable and essential liquid for their overall health. But if the cat wants to drink milk - give him milk.