We've always thought aye-ayes looked like a little like horrendously malformed koalas. In fact, they're actually lemurs β€” lemurs with the freakiest fingers we've ever seen.

In this, the latest in Ze Frank's outstanding "True Facts about _______" nature series, we investigate the aye-aye, its nightmarishly awesome middle digit, and, well, its general weirdness.

[Via Ze Frank]