Females reign supreme in bonobo society by working together to keep males in their place.

Scientists suspect that contagious urination, a behavior they observed among a troop of apes in Japan, may play an important role in...

A 38-day expedition in the remote Alto Mayo region, where development threatens wild habitats, turned up one previously unknown animal...

Scientists have wondered if the many captive tigers in the United States could one day help restore the species in the wild.