well, yes, li'l furriend, in our case there is. our brofur nels is a geezer, an' that means he's furry old an' creakey in his bones, an' he has a prollem wif his heart. he hasta eat special foods that has extra vitymans an' stuff that geezers need to keep onna right side of dirt. they also makes him pee a lot, although we've nefur figgered out what peein' hasta do wif blood pumpin'! so if the foods you is
although his foods wouldn't hurt us unless we eated them alla time, mom sez we pees quite enough, thankyoufurrymuch, an' we doesn't need to increase our output. she also sez if you beats up on geezer cats or kitties who can't defend themselfs, you'll go to stay wif basement cat. furefurr.
an' besides, if you eat too much, you will asplode.