I have noticed that Herbie has smelly breath. He eats the same as Mikey and Mikey doesn't smell at all. I have checked his teeth and gums and they look OK. He still has some puppy teeth as he's only 5 months so bad teeth should not be a problem. The smell is more like a fishy smell than old dog bad breath that Ronald has got. He cannot pinch food as it's never left around, Anyone got any ideas on what it might be?