8 Quirks You Might Have That Are Actually Super Rare

6. Ear Wiggling

Can you wiggle your ears? Chances are that you started doing it the moment you read the heading.

If so, then you're in the minority, as it is estimated that only around 10-20% of people can move their ears on demand.

Ear wiggling is a vestigial trait, left over from when our evolutionary ancestors were able to swivel their ears to pinpoint sounds - much like modern dogs and cats do. It's controlled by the auriculares muscles, but it's not entirely clear why some people can do it and some people can't (to be fair, ear wiggling is not high up many researchers' lists of priorities).

Some think that it's genetically inherited, others think that it can be learnt, some think that we're all born with the ability, but some just lose it as they grow up. One study even suggests that, whether or not you're a wiggler, the muscles will try their very best to move your ears in response to sound, even if only by a millimetre or so.