my 6 month old is eating to fast and every time i feed him he vomits. im feedin both dogs 3 times a day my 10 week old has no problem with it he'll sit and eat till he's full, but the older dog will eat what is left and his then it will come back up. could it be some thing with the breed that he has to eat so fast, is it time to change him to dog food im really at a loss on what to do.