Bonobos (Pan paniscus) and other apes, such as common chimpanzees (Pan troglodytes) and gorillas (Gorilla sp.), have muscles long-believed to be only present in humans and used for walking on two legs (bipedalism), using complex tools, sophisticated facial and vocal communication, according to new research by a Howard University scientist. Social gathering of six bonobos at San Diego Zoo. Image credit: William H. Calvin, University of Washington...
