Rats and other animals need to be highly at tuned to social signals from others so that they can identify friends to cooperate with and enemies to avoid.

老鼠和其他动物需要高度关注来自别的动物的社交信号，以便它们识别哪些是可与之合作的朋友或需要避免的敌人。

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"I don't believe that they had a three-second memory because animals need their memory, so they build up over time knowledge of where the food is," said Roy Stokes, a student at the Australian Science and Mathematics School.

澳大利亚科学与数学学校的学生罗伊·斯托克斯说：“我不认为它们有三秒钟的记忆，因为动物需要记忆，这样它们就会随着时间的推移逐渐了解食物在哪里。”

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Rats and other animals need to be highly attuned to social signals from others so they can identify friends to cooperate with and enemies to avoid.

老鼠和其他动物需要对来自其他动物的社会信号有高度的协调性，这样它们才能分清哪些是可以合作的朋友，哪些是要躲避的敌人。

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The paddocks will need water. Some farmers design paths for animals from different paddocks to drink from a common watering place.

VOA: special.2010.01.19

Is it true that animals need reinforcement and punishment to learn?

动物真的需要强化和惩罚才能进行学习吗？

耶鲁公开课 - 心理学导论课程节选

To fill this culture dish with inner ear cells you would need the equivalent of 40 experimental animals.

用内耳细胞填满这个培养皿,你得需要四十只试验动物。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Lloyd seemed uncomfortable speaking for FEMA. He acknowledged that team members or responders have been ignoring FEMA's rules to get what the animals need.

NPR: FEMA's Efforts to Help Pets Draw Criticism

Hawks, foxes and other animals need them as food, says Lindsey Sterling Crank, executive director of the Humane Society of the United States' Prairie Dog Coalition.

WSJ: In Utah, a Town Digs Deep to Battle Prairie Dogs

Battersea Dogs Home in London said it receives more dogs in March - often unwanted Christmas presents - and some animals need a break from the kennels.

BBC: Battersea Dogs Home: 'Sensitive' Staffies need fostering