Not sure if this is a problem or not. Normally my pup has no smell to her breath unless she just finished eating. However, after shes been sleeping for awhile she gets up and her breath smells a bit metallic. I'm not sure why. I did some research on the net and couldnt find anything. She an english bully so she has the face flaps which cover her lower jaw. I have noticed that she has a fungus there on her lower jaw...the same thing she gets by her face folds from her tears. Could that be the cause? I clean her lower jaw just as much as I clean her face. But its a bit harder because its on her mouth.