Two male lions became infamous for terrorizing and eating humans in 1898 during the construction of a railway bridge over the Tsavo River in Kenya. Now, an innovative genetic analysis of hairs trapped ...

Lions are the most social among the big cats. While other big cat species may hunt together or live in small family groups, lions form lion prides of 15 to 40 lions. These complex family structures ...

It may sound surprising, but groups of hyenas will sometimes take on animals much larger than themselves, even lions. Although usually, the lion is not a full-grown male, but rather a younger lion or ...

Male California sea lions are polygamous and must fight to defend their territories and their harems. Claire Fackler / CINMS / NOAA When a species grows more abundant, the animals typically become ...