Why Does My Dog Tilt His Head? The Adorable Mystery, Explained

The head tilt is probably the most universally loved thing dogs do, and there are several good explanations for it. There is also a version that is not charming at all, and the difference between them is one of the more useful things a dog owner can know.

Seeing past the muzzle

One leading explanation is straightforwardly mechanical: a dog's muzzle obstructs part of its lower visual field, and tilting the head moves it out of the way to get a clearer view of a person's face.

There is a neat piece of supporting evidence here. Dogs with more pronounced muzzles — greyhounds, for example — have been observed head-tilting toward their owners more often than flat-faced breeds, which is exactly what you would predict if the muzzle were the obstruction.

Hearing more precisely

Dogs locate sounds partly by the tiny differences in when a sound reaches each ear. Ear flaps interfere with that, so tilting the head repositions the pinnae for better sound collection and localisation.

This is why the tilt so often appears at a novel or ambiguous sound — a doorbell on television, an unfamiliar word, a noise outside. The dog is triangulating.

Understanding you

Dogs read us through a combination of words, tone, facial expression and body language, so seeing your face clearly matters for comprehension rather than just for looking at you.

There is also an interesting finding worth reporting carefully: dogs that successfully linked a word to a specific object were more likely to tilt their heads when hearing that word. That is suggestive of the tilt being associated with processing meaningful input rather than being purely mechanical — though it is one line of evidence, not a settled account.

And we trained it

The least romantic explanation is probably a real contributor. When a dog tilts its head, people reliably smile, speak warmly and often reward it. That is textbook positive reinforcement.

So some of the head tilting your dog does is a learned behaviour maintained by your response to it — which is a reasonable thing to enjoy rather than feel cheated by.

The persistent head tilt

A head tilt maintained continuously, rather than produced in response to something, indicates a problem with the ear or the vestibular system — the apparatus that controls balance and spatial orientation.

• Outer ear infection. Common, often secondary to allergies, and typically accompanied by scratching, head shaking, redness, discharge or a strong smell.
• Middle or inner ear infection. More serious, and associated with a more persistent tilt.
• Vestibular disease. Often sudden in onset and dramatic — head tilt with loss of balance, falling or circling to one side, and rapid involuntary eye movement. The idiopathic form in older dogs looks alarming and frequently improves substantially over days to weeks, but it cannot be distinguished from more serious causes without examination.
• Ear polyps or masses.
• Neurological disease, including stroke-like events and, less commonly, tumours.

The short version

A tilt that happens when you speak, and stops, is your dog trying to see and hear you better. A tilt that is simply there is your dog's balance system telling you something. The first is worth enjoying; the second is worth an appointment.