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。

On the warmer plains and valleys that surround the plateau, grazers are on the move.

在高原周围温暖的平原和山谷, 食草动物都在前进。

And you're right, they are herbivores, they eat grass.

你猜对了，狒狒是食草动物，他们吃青草。

The cause of this crisis? Herbivores, mostly deer.

这场危机的原因是什么？食草动物，主要是鹿。

Its leaves are full of a toxin called emodin that discourages browsers.

它的叶子充满了一种名为大黄素的毒素，使得食草动物望却步。

And where there's grass, there are herbivores, also known as plant-eaters.

有草的地方，就有食草动物，也就是吃植物的。

Smaller grazers are still found here, too.

这里也能找到小型食草动物。

Dugongs are the largest herbivores in the sea.

儒艮是海洋里最大的食草动物。

Because while they maybe vegetarians, it's still wise to " hoof" it .

虽然它们可能是食草动物，但最好还是离远一点。

Even today, the battle between herbivores and carnivores rages on.

直至今日，食草动物和食肉动物的战争依然延续。

Predator numbers cannot increase until herbivores grow.

在食草动物生长之前，捕食者的数量不会增加。

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。

They increased their levels of an enzyme called lipoxygenase, which is known to deter herbivores.

这些番茄的脂肪氧化酶水平会上升，这种酶已知被用来检测食草动物。

Most herbivores supplement a leafy diet with higher energy foods like fruit and seeds.

大多数食草动物在吃叶子的同时也会食用其它更高能量的食物，比如水果和籽类。

Wait a minute. I thought rhinos were vegetarians.

等一下，你们犀牛应该是食草动物吧？

But those methane emissions might get cut—by feeding the grazers something called 3-nitro oxypropanol.

但在这些食草动物被喂食名为3-nitrooxypropanol的抗嗝化合物后，甲烷的排放量正在减少。

This lumbering vegetarian is no threat to the llamas, but it does arouse their curiosity.

雕齿兽是一种食草动物，它对于美洲驼没有威胁，但是却激起了它们的好奇心。

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土地上漫游。

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。

" So that's it? Prey fears predator, and you stay in power? " asked Judy.

“就为了这个吗？食草动物害怕食肉动物，然后你就掌权了？”