My little Yorkie has been fixed, so not to worry! he doesn't have bad breath at all.. And his jaw is perfect... Actually I get all his shots, every year. I just don't agree with the risk of putting him under just to " Fix his teeth" my opinion for what it's worth. Thank you for responding..P.S. His teeth actually look great.. He eats lot's of greenies. and the most expensve high quality doggie food around...