Benefits of Grooming for Snow Monkeys | Nature | PBS

Watch the full-length program at http://video.pbs.org/video/2365230301/?utm_source=youtube&utm_medium=pbsofficial&utm_campaign=naat_covefullprogram (US Only)
The troop that grooms together, stays together: Get to know the social ins and outs of individuals within a 160-member snow monkey troop led by Kuro-san, a young male still new to the job and something of a solitary grouch. Snow Monkeys airs Wednesday, April 23 at 8 p.m. (ET) on PBS (check local listings). For more, visit http://www.pbs.org/wnet/nature