Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dian Fossey was an American zoologist who undertook an extensive study of gorilla groups over a period of 18 years. She studied them daily in the mountain forests of Rwanda, initially encouraged to work there by famous anthropologist Louis Leakey. She was murdered in 1985; the case remains open. Called one of the foremost primatologists in the world while she was alive, Fossey, along with Jane Goodall and Birut Galdikas, was part of the so-called Leakey's Angels, a group of three prominent researchers on primates (Fossey on gorillas; Goodall on chimpanzees; and Galdikas on orangutans) sent by archaeologist Louis Leakey to study great apes in their natural environments.