Inside the harsh lives of wolves living at the top of the world. Our writer spent 30 hours traveling with arctic wolves and gained a new appreciation for these predators of the tundra.

What we do know is that because of its pitch and the suspension of notes, the sound of a howl can be heard as far as 16 kilometers (10 miles) away on open tundra. Wolf packs often claim large ...

The tundra biome is the coldest and one of the largest ecosystems on Earth. It covers about one-fifth of the land on the planet, primarily in the Arctic circle but also in Antarctica as well as a ...

Wolverines contribute positively to the ecosystem by scavenging kills that predators such as wolves or bears leave behind. According to Travis Duncan of Colorado Parks and Wildlife, these omnivores ...

The Ethiopian wolf is a lanky, reddish-brown canid that looks more like a coyote or fox than a wolf. It lives in Ethiopia’s mountainous highlands, a tundra-like landscape where the wolves feed ...