?He has been having very loud stomach noises and eating grass. Got this occasionally since he was a puppy (he is now 4) but since March, he has had at least 5 of these episodes. No throw up, no diarrhea, no appetite for his food, but is playful/runs & gets excited for treats. took Bravecto on March 1 (concerns me due to the stories of it being associated with liver and kidney disease). He had a CBC done two weeks after that-all came up normal. His vet put him on purina EN dog food. One vet is "sure" it's his diet (has been on EN) &one vet only treats the one stomach ache and won't look for an underlying cause. ?