厚皮类动物
- 网络pachyderm
厚皮类动物-
推荐理由：谁不喜欢厚皮类动物和美好的结局呢？
Because who doesn 't love a pachyderm and a happy ending ?
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这种趋势发生在厚皮类动物、大鲸鱼以及较高级的灵长类动物。
This trend occurred in pachyderms , large whales , and the higher primates .
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这就是布朗克斯动物园中34岁的亚洲雌象“快乐”向研究者们展示厚皮类动物能在镜子中认出自己的方式。这种复杂行为仅在少数几个物种身上能观察到。
That is how a34-year-old female Asian elephant in the Bronx Zoo showed researchers that pachyderms can recognize themselves in a mirror-complex behaviour observed in only a few other species .