We've all been there. Frank, the happiest dog on the block, runs to you with tongue flailing and tail wagging and tries to lick your face off. You wrench backward in olfactory agony as you realize your dog has the world's worst halitosis!
Bad doggy breath is caused by the build-up of stink producing bacteria in your dog's mouth, lungs, or belly and most often by gum or dental disease. If your pup's kisses become wretched and begin to cause a disconnect between you and him, it might be time to consult your vet.
Look out for other symptoms that might accompany his malodorous ways, such as, vomiting, low/no appetite, frequent drinking and urination, and sweet or fruity breath. These could be signs of bigger issues.