Day 22: Tongue Flick = Uncomfortable? Facts About Dogs Tongue You Did Not Know MyFurries Blog Does your dog stick out his tongue after barking? Whether they're showing a little extra love or trying to tell you something's up, a dog's tongue can say a lot Understanding these behaviors helps us build a stronger, more Ever seen a dog flick their tongue and vibrate their jaw after sniffing something interesting? This is called the Flehmen response. Its a special technique dogs use to enhance their sense of smell, Barnes Veterinary Neurology