For many animals, moonlight changes everything from the way they hunt to how they protect themselves or find mates. Some adapt for survival, while others take advantage of the extra light in ...

Animals are noisy. And their noises can travel a long way. But making sounds can be a double-edged sword: it can help them communicate, sometimes over long distances, but it can also reveal them to ...

Have you ever wondered why moose in Alaska are larger than their southern relatives? Have you considered why many Arctic mammals appear bulkier than species living closer to the equator? There’s a ...

The persistent presence of humans and their infrastructure in U.S. national parks has yielded dramatic changes in the behaviors of large animals who live there, a new study has found. Even during the ...

In nature, it's not uncommon to observe animals that change color with the seasons. You may have heard of the arctic fox or the mountain hare, which are white in winter and brown in summer. This ...