Since young male chimps were less inclined to play dollies, the authors say their study presents the first evidence of an animal species in the wild in which play differs between males and females.
由于年轻的雄性黑猩猩并不倾向于玩洋娃娃，所以研究者称他们的研究第一次证实了野生动物物种在玩耍方面，雌性和雄性是不同的。
He died in 2000 at the age of 26, quite young for an animal that can live up to 45 years in the wild and 60 in captivity.
他死于2000年，26岁，对于一个在野外能活到45岁、圈养能活到60岁的动物来说是很年轻了。
Much of an animal "s life is devoted to reproduction, and most of the ACTS of altruistic self-sacrifice that are observed in nature are performed by parents towards their young."
动物的生命中有大量时间是用于繁殖的，我们在自然界所观察到的利他性自我牺牲行为，大部分是父母为其下一代做的。
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