For cats about 15 lbs, they require at least 1/2 a cup to 3/4 of a cup. Cats about 10 lbs need 3/8s cup to 1/2 cup of food. And finally cats about 5 lbs require 1/4 cup to 1/3 cup of food. this is daily for all. This is a ballpark estimate for all cat breeds. depending on the breed, the amount is subject to change. Different cats and breeds will need different formulas or brands, so you will need to research the best option for your cat.