Both Mack and Ruggles would love to eat all day long. If I free fed them they would both be blimps. They each get a cup of kibble in the A.M. and a cup in the P.M. It is really important to keep their weight down. Mack is 9 and has an irregular heart beat that is controlled with a people medication. I am sure he wouldn't still be alive if we let him eat as much as he wanted.