Family warmth

  In Canada's Wapusk National Park, a mother polar bear cuddles with her two cubs. When polar bears are born, they weigh only a pound. They'll stay with their mother in a hibernation den until they reach 20-30 pounds, at which point they all venture out into the world. Female polar bears have about five litters over the course of their lives, a significantly lower reproduction rate than other mammals. Photograph By Quinn Chan, National Geographic.

  Two bear cubs play in a forest of the Carpathian Mountains in Ukraine. Your Shot photographer Volodymyr Burdiak says he wasn't expecting to see them emerge from the bushes, and he had only a few seconds to get this photograph before they ran back into the woods with their mother. Photograph By Volodymyr Burdiak, National Geographic.