Question

What are the two folds of skin at the bottom outside of cat's ears called?

Answer 1

The two folds of skin at the bottom outside of a cat's ears are called pinnae. The pinnae help cats to hear better by funneling sound into their ears and helping them to locate the source of a sound. They also help cats to express their emotions, as they can move their pinnae to indicate their mood.

Answer 2

In animal anatomy, Henry's pocket, more formally known as a cutaneous marginal pouch, is a fold of skin forming an open pouch on the lower posterior part of the external ear.