thick fur
An arctic foxes fur changes color throughout the seasons; summer, their fur is brown or black, but in winter their fur is white. It's white, thick fur and fluffy white tail help it survive in their extreme environment.
Caribou may use their antlers in times of dire need. To survive their cold, harsh climate, the use the layer of thick hair/fur.
Thick and brown
reddish brown thick fur.
Like all deer, reindeer(or caribou) grow a longer pelt in winter. Being from a bitter cold climate, their coat is longer than white tail or mule deer.
thick white fur
90% apex
I think polar bears body covering is fur. ????????????????I think polar bears body covering is fur. ????????????????
to keep them warm
The algae is for camouflage.
Caribou have a thicker coat of fur and wider hooves - nova net answer