Bears can live in practically every habitat on Earth, from tropical jungles to the Arctic Ocean. Wherever they are found, they are capable of surviving extreme conditions and extracting the highest-quality food. Detailing the latest research, Chris Packham explores the specialized adaptations that have enabled bears to thrive, including how a polar bear's hollow fur allows it to feed throughout the grueling Arctic winter, whilst a state of 'walking hibernation' sees it through the summer months.

Originally released by BBC Worldwide Ltd, 2014. Streaming video file encoded with permission for digital streaming by Infobase on June 03, 2015.

Bears: Introduction --(1:11) -- Sloth Bears -- (2:25) -- Spectacled Bears -- (1:48) -- Sun Bears -- (1:30) -- Grizzly Bears -- (3:02) -- Grizzly Bears: Stocking up for Winter -- (3:09) -- Grizzly Bears: Hibernation -- (3:15) -- Giant Panda -- (1:59) -- Polar Bear -- (3:15) -- Polar Bears: Arctic Winter -- (2:08) -- Polar Bears: Arctic Summer -- (3:27) -- Credits: Bears -- (0:33) -- Sara's Polar Bear custom clip -- (17:53) -- Sara's Polar Bear custom clip -- (12:00).