灵长类动物行为生态学家西尔维亚•阿姆斯勒观察发现雄性黑猩猩会在它们地盘边界巡逻，还会残忍杀害竞争者。
Primate behavioral ecologist Sylvia Amsler observed groups of male chimps patrolling the edges of their territory and targeting rivals for brutal killings.
毛皮工业是每年超过1亿只动物被残忍杀害的主要原因。
The fur industry is responsible for the intense suffering and death of over 100 million animals every year.
他们认为，杀害动物是不道德和残忍的。
They believe that killing farm animals for food is immoral and cruel.
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