Why Do Dogs Pant? Why Does My Dog Snore So Much? Why Dogs Sleep with Tongues out : Shedding Light Woof Blankets Why Is My Dog's Tongue Hot? Vet Approved Facts & When to Worry Hepper Pet Resources Why Do Dogs Sleep With Their Tongue Out? 6 Vet Approved Reasons & FAQ Hepper Pet Resources 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