By Dr. Kerry Bowman
The most unique and human-like yet least understood of all the great apes is the bonobo, a species both rare and endangered. Although sometimes called "The pygmy chimpanzee," this little-known ape is not really a chimpanzee, nor is it a gorilla or an orangutan. It is a unique creature whose anatomy resembles that of "Lucy," the most famous of the pre-human hominids. Like Lucy, bonobos walk far more upright than chimpanzees, gorillas or orangutans.