There's no nice way of putting this....Maisie's breath is rotten. She has never had this problem before, but for the last week or so it has got gradually worse. She hasn't eaten anything different, she's not had any medication etc, so it's really puzzling me. It's a very strange sort of smell, unlike the human form of bad breath. It smells a bit like metal mixed with fish!!! Not to pleasant, especially when she's lay across my neck on the couch and yawns in my face.
Is there anything that could be causing this or am I going to have to buy some doggy breath mints?

Maisie (ruby)