According to one app for nature observers, it's the most commonly seen creature in California: the western fence lizard. Why?

In early April, the Philadelphia Zoo welcomed four baby tortoises to their family, the first to be born there in the Zoo's ...

Scientists on an expedition to the South Sandwich Islands near Antarctica have recorded horrifying videos of parasitic ...

Forget fleeting friendships—the social secrets of the long-tailed tit has revealed an extraordinary level of family ...

Happy Easter, little cottontail.