my british bulldog has always vomitted up small amounts of food, now he is vomitting most of his undigested dinner. have been to vet who suggest we mash his food and try feeding him smll amounts regularly. We were going to try this for 1 week and see what happens, we think we should put him on some sort of vitamin and perhaps a bulking up (like body builders) supplement. He is very happy, runs around and in no way appears sick, other then weight loss. What should we do?