试图根据动物的行为洞悉它们的心理过程在情况最好的时候也是十分棘手且主观的。
Trying to discern an animal's thought processes on the basis of its behaviour is notoriously tricky and subjective at the best of times.
另一个则被生动物学家们主观的称其为“滑头”，一只小型的乌贼，他往往能够变化它的颜色使它自己看上去像一只雌性乌贼。
The other is what's known rather judgmentally among zoologists as a "sneak," a small cuttlefish who changes his color and appearance to look like a female.
我想许多人会认可动物有愉悦的说法，但是人们会有争议，就是动物的简单体验和人类的体验的幸福和充实感等主观状态是不能相提并论的。
I think many people would acknowledge the existence of animal pleasure, but that's arguably a very simple experience compared to subjective states like happiness or fulfillment.
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