Emaciated animal walked 1500km south and away from Arctic Ocean, searching for food.
Up to 500 mother bears a year give birth on remote Wrangel island, also the last place to see woolly mammoths.
Touching footage as Gerda shows her maternal instincts to care and play with her baby.
Thousands join online petition to stop famous polar bear cub being exiled to the other side of the world.
Shilka became a global star last year in her pen in Novosibirsk but now she is set to be big in Japan after bid to keep her in Russia fails.
First polar bear born at zoo in 40 years separated from heartbroken mother as she gets set for new solo life.
Thousands had joined petition to stop Shilka the cub being exiled to the other side of the world but she could be gone by end of the month.
Photographers enchanted by polar bear's maternal instinct as they capture these heartwarming pictures.
Heartbroken zoo keepers said the mating season's attack was 'unprecedented’.