Before starting Lyka, Ravioli (Italian Greyhound) had a lot of tummy troubles, vomiting at least once a week and not holding his weight. I discovered he's allergic to a particular filler in the kibble we feed all the dogs. Once we made the switch to Lyka, not only has the vomiting stopped but he is able to hold his weight better. He also bounces and does circles of excitement every night waiting for me to put his bowl down.