The curious minds at What If see how humans might evolve to live underwater naturally, exploring gills, limbs, and sensory adaptation.

How do animals see the world differently than humans? In this video, we’ll show you how dogs, cats, sharks, snakes, horses, lizards, fish, and even pigeons perceive their surroundings. You’ll be ...

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 ...

Grab your glasses for this one, because we’re talking animal eyes. Eyesight is one of the most important adaptations animals rely on for survival. As humans, we know how much we depend on our eyesight ...

Add Yahoo as a preferred source to see more of our stories on Google. Meerkats, as well as humans, are part of what researchers called a "premier league" of monogamy. - Martin Schutt/dpa/AFP/Getty ...