A dog’s ears support two functions: it helps collect sound and contributes to balance. The outer ear includes the visible ear flap and the ear canal. Sound travels toward the eardrum and through the middle ear; the inner ear contains structures involved in hearing and balance. Dogs can move their ear flaps to help orient toward sounds, although the amount of movement varies by dog.
Why some sounds stand out
Dogs can detect higher-pitched sounds than people can. That does not mean every dog hears every sound better in every situation: age, ear health, distance, background noise, and individual variation matter. A dog turning its head or moving one ear may simply be locating a sound. It is only one clue, not a complete measure of hearing.
When you inspect the visible ear, look for a comfortable, familiar appearance rather than trying to reach deep into the canal. A gentle routine with an appropriate dog ear-cleaning solution can be part of basic grooming when cleaning is needed; it does not diagnose or treat an infection. Avoid inserting cotton swabs into the canal.
Notice changes over time
Compare your dog’s responses in ordinary, low-stress situations. A sudden change, repeated head shaking, odor, discharge, redness, pain, or balance trouble is different from simply ignoring a cue and deserves a veterinary assessment. Don’t test hearing with loud noises, which can frighten or harm a dog.
Understanding how the ear works makes routine observation calmer and more useful. Keep notes about what changed and when, and share them with your veterinarian if the pattern persists.