I have 2 Ragdolls as a baby my first cat started vomiting Dr. changed his diet from Raw to Hills D/D he stopped That was 1yr. ago now he started again and my other cat 1 yr. old is doing the same. NO hair balls I cant take him to the vet right now it happens just once in a while . They are big ,shiney, and look very healthy can they be over eating? can any body give me some ideas Oh, 3 times a week I give them canned D/D.