My Chi Pepe likes to chew and eat some grass, almost daily, and sometimes it will cause him to vomit. I have read different things, either that they just simply like eating grass or that they eat grass because their tummy is upset. We don't spray anything on our yard so I know it's now that. On the other hand, I don't think his stomach is upset, his poo is always firm. I feed Natural Balance Venison forumula and they get the usual treats, floosies, bully sticks, pupperoni...
Any ideas? Should I be concerned?