Mini always throws up when he munches on cat grass as he scoffs too much.

Sometimes he tries to throw up a furball. We are giving him some fish in oil (sardines, tuna etc) to help keep his digestion happy and we're going to look at hairball food as well. He only does it a couple of times a week so it's not a real worry for us, just sounds revolting! The oily fish does the trick for us.