A sleepy baby orangutan struggles to wake up after a short nap at Memphis Zoo in Tennessee. (Credit: Memphis Zoo/TMX) ...

Omaha's Henry Doorly Zoo and Aquarium announced that Ruby the Bornean orangutan is now in the "birth watch" stage of her ...

“One of the main findings is that all chimpanzee kids are risky, and that infant and juvenile chimpanzees are even more risky ...