Dogs tilt their heads to see better. because their big noses block their vision. Humpback whales jump using their peduncle muscle. Spiders shed their old skin to grow bigger. Hippos sweat sunscreen ...

In the heart of the nation's capital, in a courthouse of the U.S. government, one man will stop at nothing to keep his honor, and one will stop at nothing to find the truth.

Animal-welfare science tries to get inside the minds of a huge range of species — in order to help improve their lives. Credit...Photo Illustration by Zachary Scott Supported by By Bill Wasik and ...

While they don't write love letters, there’s no doubt animals form deep and enduring friendships and use many different ways ...