They live where it is cold for nine months. A baby caribou is called a fawn. Fawns can move about as soon as they are born. In about 2 hours a fawn can walk several kilometers. A day old fawn can run faster than a man.
Caribou have a lot of enemies like grizzly bears, lynx, and wolverines.
But wolves are their main enemy. Groups of wolves often follow a herd of caribou waiting to catch a calf, or a sick or old member of the herd. When wolves eat caribou, they are actually helping them. Caribou have a special part in their stomach where they can store food. Caribou are really fast, they are so fast that they can run 40 miles per hour.