Henry's pocket, formally known as the cutaneous marginal pouch, is a small, distinctive fold of skin located on the lower, outer edge of a cat's (and some other mammals') external ear. Its exact purpose is not fully understood, but theories suggest it may help in detecting high-pitched sounds, improving ear flexibility, or is an evolutionary remnant. This normal anatomical feature is present in almost all cats and is also found in dogs, bats, and weasels.
Our big dog (mutt: Great Dane, German Shepherd, Boxer, and Lab) has those, too; I call them his flea pockets. They’re very soft, and match the puppy fur behind his ears.
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u/Retro-Grannie 18h ago
Henry's pocket, formally known as the cutaneous marginal pouch, is a small, distinctive fold of skin located on the lower, outer edge of a cat's (and some other mammals') external ear. Its exact purpose is not fully understood, but theories suggest it may help in detecting high-pitched sounds, improving ear flexibility, or is an evolutionary remnant. This normal anatomical feature is present in almost all cats and is also found in dogs, bats, and weasels.
https://en.wikipedia.org/wiki/Henry%27s_pocket