WTF Fun Fact – The Aye-Aye’s Extra Pseudothumb

The aye-aye, a strange-looking nocturnal lemur native to Madagascar, has a small extra pseudothumb by its wrist. They are the only primate to have evolved an extra finger to help with grasping. – WTF Fun Facts

Source: ‘Cursed’ Primate Weirdos Have Extra Thumbs. Scientists Didn’t Know About Them Until Now. | Live Science

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