Stuart Brown describes Norbert Rosing's striking images of a wild polar bear playing with sled dogs in the wilds of Canada's Hudson Bay. The photographer was sure that he was going to see the end of his huskies when the polar bear materialized out of the blue, as it were: Animals at Play Shortly, before the Husky was in a crouched bow with tail wagging ready to play

The Polar Bears returned every night that week to play with the dogs