With full captions explaining how bear species hunt and feed, rear their cubs and migrate, Bears is a brilliant examination in outstanding color photographs of these fascinating animals.   There are eight species of bear that roam the world today: from the polar bears of the Arctic to the black and brown bears that prowl North America, and from the giant panda and the black, sloth, and sun bears of Asia to the Andean bear of South America. Arranged in chapters covering the different types of bear, their habitats, their family life, and cubs, the book reveals little-known facts on their anatomy, lifecycle, feeding, and their young.  Bears is an outstanding collection of photographs showing these fascinating animals in their natural habitats in a handy pocket format.