Today, if you look across the land of North America, the biggest animal you are going to see is the bison. When you see it in ...

This article was originally featured on Knowable Magazine. Isaac Newton would never have discovered the laws of motion had he studied only cats. Suppose you hold a cat, stomach up, and drop it from a ...

Walking on two legs is a rare and fascinating ability in the animal kingdom, observed across birds, mammals, and even small rodents. From waddling penguins to hopping kangaroos, these creatures have ...

When animals such as great apes are protected from invasive research, this decision is speciesist, because all great apes are protected regardless of an individual's unique characteristics. Speciesism ...

One of the most common adaptations seen in the animal kingdom is vision. Nearly 96% of all animals have some kind of eyes and they've proven so evolutionary advantageous that they've evolved multiple ...

An ever-growing body of science, along with numerous stories, clearly shows that, for many people, the presence of nonhuman animals (animals) in their lives provides a wide variety of important ...