Support Provided By
0:31
It's time to challenge the notion that only humans form lasting friendships.
0:30
Premieres Wednesday, May 16, 2012 at 8:00 p.m. ET/PT. Check your local listings.
0:30
Airs Wednesday, March 28, 2012 at 8:00 p.m. ET/PT. Check your local listings.
0:30
Airs Wednesday, March 27, 2013 at 8:00 p.m. ET/PT. Check your local listings.
0:30
Airs Wednesday, February 12, 2014 at 8:00 p.m. ET/PT. Check your local listings.
0:30
Airs Wednesday, July 11, 2012 at 8:00 p.m. ET/PT. Check your local listings.
1:30
A 3,000 mile journey across five ecosystems to encounter three species of bear.
0:30
Airs Wednesday, August 13, 2013 at 8:00 p.m. ET/PT. Check your local listings.
0:30
Airs Wednesday, January 2, 2013 at 8:00 p.m. ET/PT. Check your local listings.