My DOG Keeps Sticking Their TONGUE Out (9 Causes and Solutions) Why does my dog's tongue always stick out? When it's cute and when to worry AS USA Did you know your dog's tongue can reveal how hot they are? @passionatelypets shares four tongue shapes to watch for during warmer weather: Cool & Comfortable: When a dog is relaxed 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 Does My Dog's Tongue Stick Out? I Love My Chi Why Is My Dog Panting and Restless? 7 Causes You Shouldn't Ignore Dr. Buzby's ToeGrips for Dogs