There are some amazing wild animals that not only hybridize, but their offspring can successfully produce young as well.

A good way to start an argument among biologists is to ask them what seems a simple question: "What is a species?" To evolutionary theorists, a species is a fundamental unit, and transitions between ...

Twin tigon cubs are seen Sunday at Hainan Tropical Wildlife Park and Botanical Garden in Haikou, southern China. The cubs, born Sept. 1, are the offspring of a male Manchurian tiger and an African ...