chocolate-coloured coat in summer that changes to a bluish-brown hue in winter. This rare colour morph is prevalent in ...

A slumbering Arctic fox in winter will wrap its long, bushy tail around its body for added warmth. Its feet are covered in dense fur to insulate against the cold and provide traction on the ice.

In winter, the Arctic fox's coat is white. This provides camouflage against snow and ice. In spring and summer, the coat changes to brown or grey. This gives better camouflage when surface snow ...

while in summer, the land (though still cool) bathes in 24-hour sunlight. Conditions are so tough that only a heroic cast of animals can survive here year-round. Some, like the Arctic fox and ...