Dogs will flick their tongue as an appeasement signal but also as a signal they're relaxing. While similar each signal has subtle differences. I will do posts on both. The tongue flick Amazon.com: Coolfire Vibrating Alarm Clock Wristband, Silent Wake Up Watch for Heavy Sleepers, Won't Disturb Partner, Couples Roommates, Deaf Hearing Impaired, 4 Alarms, Bluetooth App, Rechargeable (Purple) : Home & Kitchen It's a TONGUE thing News From the Farm Why Is My Dog Panting and Restless? 7 Causes You Shouldn't Ignore Dr. Buzby's ToeGrips for Dogs Why Do Dogs Stick Their Tongue Out? Potty Buddy Reasons Why Your Dog's Tongue Sticks Out