Sixth Finger Discovered on Hand of Bizarre Aye-Aye

It's the only known primate to have a sixth digit. Madagascar's rare lemurs have tiny 'pseudothumbs' that move like human thumbs. The aye-aye's hands are so odd that researchers say it looks like they're 'walking on spiders.'
Published: 12:08 PM EDT October 21, 2019
Updated: 11:18 AM EDT October 21, 2019