2/12 Steve Backshall abseils into a glacier and has a close encounter with a humpback whale.
1/12 Steve boards an Arctic icebreaker in search of the Arctic's top predator, the polar bear.
9/20 Romeo the otter has a problem in his mouth that could be life-threatening.
8/20 Keepers help inoculate endangered Grevy's zebra against an outbreak of deadly anthrax.
1/20 Keepers perform an emergency caesarean on Imogen the giraffe.
9/20 Ben Fogle is on safari using a secret 'bouldercam' camera, learning about rhino dung.
8/20 Ben meets up with new baby camel Elvis, while Kate gets up close to the new wolf cubs.
4/10 A year with Storm, the head of a wolf pack in Canada's frozen north.
10/20 A hidden 'carcass-cam' shows the ruthless efficiency of the white-backed vultures.
Documentary tracing David Attenborough's lifelong passion for birds of paradise.