Emily, if Tanner is old enough to eat regular cat food, I wouldn't deny him the adult food. BTW, how old is Tanner? If he is still a kitten, it might be best to allow him to eat only kitten food, until he is a little older, anyway. Can you feed them separately? I have to feed Tiger separately from the others because of her dietary requirments, and the other would prefer her food over the regular dry food. Tiger is fed on top of the 'frig. because it is high enough so that the others cannot jump up and get to it.

.........wayne