Day 22: Tongue Flick = Uncomfortable? Understanding Your Dog's Quivering Mouth: The Joy of Eating Steak 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, Why Do Dogs Stick Their Tongue Out? Top Dog Tips Do Dogs Have Taste Buds? Tongue & Flavor Facts PetLab Co What Really Causes Your Dog to Sleep With Its Tongue Out? Your Pets at Home