A grizzly bear targets vulnerable caribou calves while a herd moves across Alaska’s tundra, showing how predators exploit moments when young animals lag behind. Caribou rely on speed, herd behavior, ...

During the Ice Age, the tundra was dominated by massive predators like saber-toothed cats, cave hyenas, and the enormous short-faced bear. Yet despite their size and power, the predator that ...

On this side of the Atlantic, people mostly associate reindeer with Christmas and Santa’s sleigh. However, people who live in areas like Norway, Finland, Siberia, and even Alaska know that reindeer ...