Why do dogs chatter their teeth after smelling something?
Pheromones. Some dogs, especially intact male dogs, may chatter their jaws/teeth after smelling a female dog. However, female dogs can do this too. The thought is that the pet is trying to smell the scent better by bringing the odors into the scent organ at the roof of their mouth
Why does my dog chatter his teeth when he smells pee?
Usually, dogs will involuntarily start to chatter their teeth when theyre getting ready to tackle a threatening situation. He will also start to chatter his teeth when he senses you are in potential danger or sniffs another dogs urine