But animal behaviorists have long believed that the crow has at least one thing in its favor.
但动物行为学家一直认为，乌鸦至少有一个优势：它是世界上最聪明的鸟之一。
Many animal behaviorists say that what people really mean when they call a dog smart is that the dog is highly trainable.
许多动物行为主义者说，当人们说一只狗聪明时，实际上是说它很容易训练。
Seventy-four percent of dog owners believe their dogs experience guilt, but animal behaviorists say dogs lack the ability to feel shame.
的狗主人相信他们的狗狗会觉得内疚，但是动物行为学专家称狗狗没有感到愧疚这项功能。
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