Beneath the tropical trees of southern Mexico, enormous shoals of sulfur mollies blanket the water surface of toxic sulfur springs, where survival depends on collective defense against relentless ...

A cottontail rabbit seems like the most delicate, vulnerable creature on Earth until it starts running. Even a seriously bloodthirsty fox has to reach top speeds just to have a chance of catching it.

A great kiskadee is captured mid-flight immediately after launching an unsuccessful overflight attack on a shoal of sulphur mollies. The image shows the bird with its wings fully extended as it passes ...