This might not be in the correct section,but I need some fast help. Our 65 lb German Shepherd got a hold of less than half a brownie while I left the room. I caught him in the act,so like I said he got less than half of a smaller brownie. Should we call the vet right away,or should we wait a little? Ever since he ate it about 15-20 minutes ago he's had a little bit of gas.