February 15, 2006—Discovered on a tiny island off Panama in 2001, the pygmy sloth has never been caught on film until now. When National Geographic photographer Bill Hatcher became the first human to come face-to-face with one of these Central American mammals, the sloth took the measure of this momentous occasion … and promptly fell asleep. Now it's your turn to see the pygmy sloth inaction.

For more on the pygmy sloth, see the March 2006 issue of National Geographic magazine.