He's always had a massive appetite. Limit him to the suggested weight of 450 grams of pedigree vital a day. But he still looks for food after that! His food hasn't changed. Except where we got him from they used to let him eat bones. Which we've stopped. The vet suggested the worming tablets as his belly was quiet large when he went in for his first jab. He hasn't vomited that I'm aware of. Although I did just find him trying to eat a snail.