Research overview: pinna mobility and directional sound localisation

A cat external ears, or pinnae, swivel independently, and this overview reviews how this mobility sharpens sound localisation. Each pinna can rotate widely, funnelling sound and helping pinpoint a source horizontally and vertically without the animal turning its head, while the brain compares timing and intensity between the two ears. Numerous small muscles drive this fine ear movement. Researchers study localisation through behavioural testing and the mechanics of the outer and middle ear. Why it matters: precise sound localisation lets a cat fix the position of unseen prey rustling in cover, a crucial skill for an ambush predator, and the swivelling pinnae also serve communication, their orientation signalling mood. Ear mobility thus links acoustic hunting, anatomy, and social signalling in a single mobile structure.