In the next scene, Vanilla jumps up and down and hugs another chimpanzee, identified as alpha male chimpanzee Dwight by Save the Chimps, before looking up at the sky with wide eyes. "Dwight ...

revealed that chimpanzees are losing traditions of male mating gestures. This coincides with declining chimpanzee populations ...

the big alpha-male chimpanzee, at the Yerkes National Primate Research Center outside of Atlanta. They're watching Steward brandish a Plexiglas stick at an oblong polycarbonate box sitting behind a ...

Humphrey was a top-ranking male chimpanzee in Gombe National Park, Tanzania, in the early 1970s and known for his frequent attacks on other chimps. Tensions between Humphrey and his southern ...