Robin Rivello from the American Mustang and Burro Association says burros have even protected farm animals against bears.

VOA: special.2010.02.16

And some of them even wrote some poetry about the animals themselves.

甚至还有学生主动地,写关于动物的诗。

麻省理工公开课 - 媒体、教育、市场课程节选

But in the real world when dealing with humans, but even when dealing with animals, we don't actually always use primary reinforcers or negative reinforcers.

但当我们在现实中训练人类，甚至是训练动物时，我们实际上并不总是用到初级强化物,或是负强化物。

耶鲁公开课 - 心理学导论课程节选

Genes exist in plants,animals, human beings and even some viruses.

VOA: special.2010.03.23

His harmonious unity with nature is broken, he clothes himself and his old friends the gazelles run from him now He will never again roam free with the animals. He cannot run as quickly. His pace slackens, he can't even keep up with them.

他与自然的和谐被破坏，他开始穿上了外衣,以前的朋友羚羊，离他而去,他不再和动物一起，四处游荡,行动变得迟缓，再也无法赶上羚羊。

耶鲁公开课 - 旧约导论课程节选

"As long as I can remember, it was animals,animals. Even before I could talk, I was watching earthworms and things, reading Doctor Doolittle books, wanting to learn the language of animals.

VOA: special.2009.11.18

Even if animals are unrelated, they are nice to one another.

即使没有血缘关系的动物，它们也会友善地对待对方。

耶鲁公开课 - 心理学导论课程节选

But he says even with stories where animals talk, sometimes it can be really hard to reach children.

VOA: standard.2009.12.11

Animals that are altruistic even to the point of dying to help another, those genes will, under some circumstances, be preserved over the genes of people who are less caring.

有强烈利它主义的动物,甚至为其他动物牺牲自己，这些基因在某些情况下，就会被保存下来,而那些不关心他人的基因则不会。

耶鲁公开课 - 心理学导论课程节选

In bad times, the desert turns into a barren wasteland, challenging the survival skills of even the hardiest of people and their animals.

VOA: standard.2009.10.06

But even when parents follow all the guidelines, putting their babies to sleep on their backs, removing blankets and stuffed animals from their cribs, infants still die without warning.

VOA: standard.2010.02.08