If you see a dog licking its lips, you might assume it is simply eating or drooling over something. But if there is no food around, a dog might be licking its lips because something is going on around them that they perceive as a threat. Lip licking is a type of dog communication, and a dog who licks its lips is using body language to let you know how they’re feeling.
We break down what it means when a dog is licking its lips unrelated to eating and what to do to solve the behavior.
What Is Lip Licking in Dogs?
Lip licking is just what it sounds like: a dog licking his lips. If you notice a dog licking his lips when there’s no food involved, he’s probably trying to send a message.
What Does Dog Lip Licking Mean?
Dog trainer and behaviorist Turid Rugaas coined the phrase “calming signals” to refer to lip licking and similar dog behaviors.1 Lip licking is also often referred to as an appeasement gesture. Dogs exhibit certain behaviors and actions when they feel stressed or uncomfortable. It’s usually because something is going on around them that they perceive as a threat. Dogs who are licking their lips are usually sending the message that they are worried.
They Feel Threatened
Dogs lick their lips to appease and soothe a person or animal they see as a threat in order to ward off aggression. An example of this can be seen in dogs who are scolded when their owners return home to find the dog has had an accident in the house. A dog might not connect the scolding to relieving himself indoors. Instead, he sees his owner as a threat. The owner may be yelling and looming over him. The dog may offer an appeasement gesture by licking his lips and averting his gaze. This is the dog’s way of saying that he isn’t a threat to the person behaving aggressively.
They Might Be Confused
Sometimes dogs exhibit appeasement gestures like lip licking and yawning when they are frustrated or confused. Many owners notice this during training sessions when their dogs are having trouble understanding what is being taught. If you notice lip-licking, yawning, scratching, or ground-sniffing while training your dog, it might be time to stop the training session.2 A dog cannot learn new things when stressed. To end on a positive note, ask your dog to do something simple he already knows, like sit. Reward him with a treat and praise, and then end the session. Try playing with your dog for a little while to bond and help your dog relax.
Health Issues
Another important possible reason for excessive lip-licking in dogs is a health-related issue. A dog might lick his lips due to nausea, dental disease, or mouth pain.3 Look for other signs of illness and keep a close eye on your dog. When in doubt, contact your vet.
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