Animals can make us happy, and we can not live without animals in the world, so we should protect animals and love animals.

动物能使我们快乐，世界上不能没有动物，所以我们要保护动物、爱惜动物。

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Sharks are among the oldest animals in the world.

鲨鱼是世界上最古老的动物之一。

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If we don't stop climate change, many animals and plants in the world will be gone.

如果我们不阻止气候变化，世界上许多动植物将会消失。

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The World Heritage Committee said increased tourism,immigration and invasive species threaten the animals of the Galapagos.

VOA: special.2009.12.16

The beauty of the world, the paragon of animals and yet, to me, what is this quintessence of dust?

宇宙之华，万物之灵,但对于我，这尘土的精华又算得了什么？

耶鲁公开课 - 公正课程节选

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

The important thing to remember here is that the animals the developing world now wants to consume in ever larger quantities need to consume food themselves.

FORBES: Grains Over Gold

The data is linked to Google Maps so you can see the kind of terrain or where in the world these animals are.

BBC: Love Earth

Of all the animals in our world, humans have the deepest emotional ties with horses and dogs.

CNN: Should I still be grieving my horse's death?