MANUEL PRESTI / SCIENCE PHOTO LIBRARY MANUEL PRESTI / SCIENCE PHOTO LIBRARY
Brown bear cub (Ursus arctos) climbing on a log. The female brown bear gives birth to 1-4 cubs every other year. The cub is raised entirely by the mother and is taught to climb trees to escape predators. Photographed in the Katmai National Park and Preserve, in Alaska, USA.
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