Aye-ayes just got weirder with the discovery of a tiny, sixth ‘finger’

An extra digit, a pseudothumb, may help the primates grip objects

aye-aye

Aye-ayes’ long, slender fingers are highly specialized for a hunting technique called tap foraging. Now researchers have discovered the primates have a nubby sixth digit, too.

David Haring/Duke Lemur Center

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