Caribou migrate farther than any other known land animal

Land migrations may get shorter as infrastructure and climate change alter the environment

Caribou herd

Some herds of caribou migrate between 1,250 and 1,350 kilometers in Canada and Alaska each year to get from their wintering grounds to breeding grounds and back again.

K. Joly/National Park Service

Some animals really go the distance to find food, a mate or a place to raise their young.