Where now?: A recent research study suggests thinning polar icecaps threaten the habitat of polar bears.  

The great white shark, at home in warm waters and actually bluish when young.  

A lioness works the springbok crowd.  

In the footsteps of giants: A grizzly cub learns the art of descent.  

Why does the zebra have its stripes?: Some say camoflage, others that they are to confuse predators, including the tsetse fly that targets single-colored regions.  

Small beginnings, big future: A leopard cub displaying poise and agility.