Why Does My Dog Stick His Tongue Out? Causes Explained Dog Language: 12 Noises Your Dog Makes and What They Mean Why is my dog's tongue hanging out? Tuff Pets Idiopathic Head Tremors: Everything you need to know Oh My Dog! 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