I fill my cat's (Sassy) bowl once a day and she usually has some left the next morning. The only time that I will fill her bowl up more than once is if Jake eats Sassy's food. Usually if she eats all of her food, I will fill it up again because she doesn't really eat that much, but she always has food. Jake is the same way. We fill her bowl once a day and she has enough to last her all day. Jake is very much like a cat in that sense because she will eat a couple bites of her food, then walk away and when she's hungry again, she'll go back and eat some more. My old dog was the same way. I guess since she knows that she will always have food, there is no need to hurry and eat it all. My Grandma's cat, on the other hand gets two full bowls of food a day. She gobbles it up like most dogs do. That cat is the biggest pig in the world. LOL.