My dog gave me a big kiss today and I noticed that he has suddenly developed bad breath. What could be the reason for this? His diet hasn't changed. How do I fix this??
There are many reasons why dogs have bad breath: They may have just eaten something that smelled bad; they may have an anal gland impaction and have been licking themselves (a good reason to not let your dog or dogs kiss you); or they may have a medical problem like kidney disease or, more commonly, dental disease.
It sounds like you need to talk to his vet. If he doesn't need dental care, then something could be wrong in his GI tract or organs. A sudden change could warn you of diabetes, kidney or liver issues.