In 1960, a researcher named Jane Goodall began to live with and study wild chimpanzees in Africa.
1960年,一位名叫珍·古道尔的研究人员开始在非洲与野生黑猩猩一起生活并进行研究。
Years of observations by biologists Dian Fossey, who observed gorillas, and Jane Goodall, who worked with chimpanzees, could not prove that animals cry tears from emotion.