No mammal except man has more abundant cerebral matter.

任何哺类都没有这样丰富的脑髓神经。

In come amphibians, reptiles, dinosaurs and finally, mammals.

接下来就是会出现两栖，爬行，恐龙，最后是哺类。

But some scientists think mammals also have this capability.

但有些科学家认为哺类也有这种能力。

We see similar hygiene-driven responses in some colony-living mammals.

些群居生活的哺类身上也会看到出于卫生的反应。

And as they get older they transition to feeding more on mammals.

当它们越来越大，就转为喂它们较多的哺类。

In most mammals, the placenta is confined behind a barrier of maternal cells.

大多数哺类的胎盘 被母亲体内的层细胞屏障围着。

Killing mammals was either just collateral damage or a form of protection against possible predators.

杀死哺类么只是种附带损伤，么是种防御潜捕食者的形式。

The percentages are very different for different groups of mammals.

不同哺类群体的比例差异也很大。

It's a tree-dwelling mammal about the size of a raccoon that's native to Southeast Asia.

这种产于东南亚地区树上生活的哺类，体型和浣熊相当。

You find it associated with play, and all mammals play.

你会发现笑是玩耍中发生的， 而所有的哺类都会玩耍。

The last group of animals we are going to talk about is mammals.

我们将讲的最后群是哺类。

Because mammalian predators that stay below that number can exist on prey smaller than them.

因为体重20公斤以下的哺类能以追捕体型较小的猎为生。

Most mammals live on land but some such as whales and dolphins live in water.

大多数的哺类生活陆地上，例如鲸和海豚生活水中。

Small mammals are such an important part of the ecosystem for transporting seeds into different areas.

小型哺类是生态系统中重的环，它们能把种子送往不同的地方。

Across from here is the Seaquarium where marine mammals will amaze you with their clever tricks.

博馆对面是迈阿密海洋水族馆，这里的海洋哺类会用小把戏来吸引您的目光。

Mammals are the group of animals that humans belong to!

人类属于哺类！

Allosaurus's feeding on sauropods, animals that're multi-times the size of our largest mammals today, the elephant.

异特龙捕食蜥脚类恐龙，蜥脚类恐龙可比如今陆地上最大的哺类大象还大好几倍。

They are mammals, which means they are warm-blooded, they have fur, and they feed their babies milk.

它们是温血的哺类，长颈鹿表面有毛，用母喂养幼崽。

Like bears, koalas are mammals, which means they are warm-blooded, have fur, and feed their babies milk.

和熊相同的是，考拉是哺类，这说明它们是有毛发的并用母喂养幼崽的温血。

In fact, the short-faced bear is probably the largest and most powerful mammalian carnivore that we have.

其实，短面熊有可能是有史以来最大、最有力的哺类食肉。