Ever seen a dog flick their tongue and vibrate their jaw after sniffing something interesting? This is called the Flehmen response. It's a special technique dogs use to enhance their sense of Why Does My Dog Stick His Tongue Out? The Dodo Why is my dog's tongue hanging out? Tuff Pets 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 Idiopathic Head Tremors: Everything you need to know Oh My Dog! Hanging Tongue Syndrome