A cat has three components to their ear much like a human ear. The outer ear, the middle ear and the inner ear.  The pocket or little fold behind a cats ear is actually the outside edge of the outer ear. It’s called the pinna.  The outer ear is pyramid shaped and is completely external on the cat’s head. This pocket or fold gives a cat their exceptional hearing ability. The pinna has two  functions, it funnels sound into the ear canal in the middle ear and it also helps the ear’s flexibility and rotates up to 180 degrees to help pinpoint and funnel sounds to the ear.

Remember, your pets count!