November 1, 2006—It's an animal so hard to find that until recently scientists knew it only from sketches and drawings.

Now time may be running out for the silky sifaka, which—like all lemurs—is native only to Madagascar and a few small surrounding islands. Hunting and habitat loss are threatening the extremely rare primate with extinction.

Join a team of scientists as they trek through Malagasy woods in search of the little-studied animal, and watch as the researchers (temporarily) capture one as part of a project to unveil secrets that might assist with conservation efforts.