A dog yawns while a child hugs them. A dog yawns at the vet’s. A dog yawns in the middle of a training session.
None of these dogs is tired.
Calming signals
The Norwegian trainer Turid Rugaas popularised the term “calming signals” for a set of behaviours dogs use to defuse tension — in themselves and in others. Yawning is one of the most recognisable.
The others usually appear alongside it:
- Lip licking or a quick tongue flick when there is no food
- Turning the head away
- Looking away, breaking eye contact
- Slow movement
- Sniffing the ground suddenly, for no obvious reason
- Curving rather than approaching directly
- Shaking off as though wet
- Scratching at an odd moment
- Blinking repeatedly
A single signal on its own means little. A cluster of them means the dog is uncomfortable and is trying to manage it.
When dogs yawn
At the vet’s. Almost universal. A dog in a waiting room yawning repeatedly is not bored.
When hugged or held. Hugging is a primate gesture; to a dog it is restraint. A yawn during a hug is a request, politely made.
During training, especially when confused or when the session has gone on too long. It is a signal to lower the difficulty or stop.
When told off. Yawning while being scolded is appeasement, not insolence.
When approached by an unfamiliar dog or person.
In photographs. Look at family photos with the dog in them. A remarkable proportion show a yawn, a lip lick, whale eye, or a turned head.
Before an anticipated event — before a walk, before a car journey, before a visitor arrives. Anticipation is a form of arousal.
Genuinely, when tired — usually a long, slow, whole-body yawn accompanied by a stretch, in a relaxed dog on a bed. The context makes it obvious.
Contagious yawning
Yawning is contagious between humans, and there is evidence it crosses the species barrier.
Several studies have found that dogs yawn in response to seeing a human yawn, and that the response is stronger when the person is their own owner than when they are a stranger. In one study, dogs also showed a greater response to a genuine yawn than to a mimed one.
Contagious yawning in humans is associated with empathy and social bonding, which is why the finding is interesting — it has been proposed as evidence of a basic form of emotional contagion between dogs and people. That interpretation is debated, and some studies have failed to replicate the effect, so it is best treated as suggestive rather than settled.
Using it
The practical value is not in the science. It is in noticing.
Learn to see the cluster. Yawn plus lip lick plus turned head plus a closed mouth in a dog who was panting a moment ago means: this dog wants the situation to change.
Act on it. Give space, end the interaction, lower the difficulty, move away. A dog whose early signals are respected does not need to escalate to growling.
Teach children to see it. The best single rule is the consent test: stroke for three seconds, stop, and see whether the dog asks for more or moves away. A yawning, lip-licking dog who turns away has answered.
Use it in training. A yawn mid-session means the exercise is too hard or the session is too long. Make it easier, get a win, and stop.
Check the photos. If your dog yawns or shows whale eye in every picture of them with your children, that is information worth having.
What a yawn is not
It is not guilt, it is not defiance, and it is not stubbornness. It is a dog with limited options telling you, quietly and politely, that they are uncomfortable.
Most dogs try several polite signals before they try an impolite one. Reading the polite ones is the single most useful skill an owner can develop — and it costs nothing but attention.
