The Clan Cats are fed in the morning and in the evening. NO FOOD IS LEFT OUT!!! There is water. If you read the " New Natural Cat" by Anitra Frazier, this is what she suggests. None of all the cats we ever had ever weighed over 12 pounds. They are healthy and happy that they are not weighed down by the extra poundage which is not healthy for them. Once while at the vet, people lugged in their 44(!!!)pound cat!! The cat was in a big dog carrier. It could not move!!! Just awful!!!!