Short answer: dogs tilt their heads to hear better and to show they are paying attention. It is normal, and many people find it adorable.
VCA says dogs have ear flaps that partly cover the ear canal, so they may change position to optimize sound. It also says a dog may tilt the head to mentally process what they are hearing, and to show they are engaged, much as a person nods in a conversation.
The AKC notes that dogs often tilt their heads when you are standing right in front of them, and that researchers do not agree on why. One idea is that a dog's muzzle may block their view, and another is that it depends on how we interact with them.
If the head tilt is constant, or your dog also seems unsteady, ask your vet. See emergency signs.
Your vet can check the ears and balance.
This article is general education, not veterinary advice. If your dog seems unwell, is in pain, or something changed suddenly, call your vet. If it could be an emergency, do not wait.
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This guide does not cover medical care. It is background on clear, calm handling at home.
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