That's because polar bear fur is transparent and hollow.When light strikes the outer fur some of it is absorbed while the rest is scattered away. The result? The fur can appear as different colors ...

Grizzly bears, for example, are a subspecies of brown bear found in parts of North America. There are many different ...

In the Arctic, polar bears are equally at home swimming in the frigid waters or galloping across fields of ice and snow. When they emerge from the water, their fur temperature drops to nearly that of ...

Polar bears don’t have to worry about skipping a wash day. The sebum, or natural oil, on the mammals’ fur helps them survive the harsh Arctic weather by making it hard for ice to stick to them ...

A polar bear's insulating fur shown under infrared heat imaging taken with a FLIR E75 24o (FLIR Systems OÜ, Estonia) Svalbard Archipelago, Norway.

Even though Eve has gained 130 pounds and has grown some of her fur back, she does not have enough of a coat or the skills necessary to survive the wild and interactions with other bears.

The bear moves like a silhouette across the landscape, its black fur blending in with the dark rocks and dusky woods. A white-coated black bear gorges on salmon roe to pack on fat for the winter.