After eight weeks, the crabs that heard only natural sounds had become much lighter and were well camouflaged.

八周后，只听自然声音的食草蟹的颜色变浅，伪装得很好。

And grazing rabbits, rodents, and humans are often a highly effective mode of spore dispersal for other mushroom species.

对于其他蘑菇种类来说，食草的兔子、啮齿动物和类通常是孢子传播的高效模式。

Where plants abound, herbivores will not be far behind.

植物比比皆是的地方食草动物的出现也不会落后。

Dugongs are the largest herbivores in the sea.

儒艮是海大的食草动物。

Yet it's significantly larger than that of its plant-eat prey.

但这比它的那些食草猎物的大脑大了。

Thorns help protect the plant from plant-eating animals.

刺有助于保护植物免受食草动物的伤害。

It also suggests that herbivory evolved in the crocodile clan on several occasions.

该研究还表明鳄鱼家族的食草性进化了好几次。

The East African savannahs support millions of grazers.

东非大草原养育着成千上万的食草动物。

Prehistoric plant eaters live every day with a target on their back.

史前世界的食草动物每天都生活在弱肉强食的环境中。

At first, the group thought the bone belonged to a smaller plant-eating dinosaur.

起初，研究小组认为这块骨头属于一种较小的食草恐龙。

Herbivores, for example, leave a third of food nutrients in their poop.

例如，食草动物的大便中含有三分之一的食物营养。

On just about every measure, they found plant eaters were most at risk, especially in forest environments.

他们几乎从所有方面都发现食草动物灭绝的风险大，尤其是森林环境中的食草动物。

Many species within these genera grow on dung from large herbivores.

这些类属中的许物种都是靠大型食草动物的粪便生长的。

For example, young shore crabs that use camouflage to hide from predators.

比如用伪装来躲避捕食者的年轻食草蟹。

Ankylosaurus is a slow lumbering plant eater.

甲龙是种行动迟缓的食草动物。

But why are these trees so well armed against browsing animals like these giraffes?

为什么这些树会如此武装自己，以防御象长颈鹿这样的食草动物呢？

So we're beginning to understand that we woefully underestimated the inner and outer life of the veggiesaur.

我们开始认识到，我们严重低估了这些食草恐龙的自身结构和外部环境。

All these Cretaceous plant eaters, with their complicated apparatus, they're all much more sophisticated.

所有这些白垩纪的食草动物都有其复杂的防御器官，它们都是很高级的生物。

So back the time, there were millions of big herbivores roaming the landscape.

回到过去，有数百万的大型食草动物在这片土地上漫游。

The pronghorn lived alongside other grazers still around today, including bison.

叉角羚曾经与像今日仍旧存活的野牛那样的其他食草动物共伴而生。