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The mighty carnivores ruled a dangerous world of Cretaceous Period.
強大的食肉動物統治著白堊紀的兇險世界。
But being a super predator like Tyrannosaurus Rex is not easy.
即使作為頂級捕食者的雷克斯霸王龍也不輕松。
Just surviving to adulthood is a major feat,
能活到成年就是個巨大勝利，
one that takes a decade or more of killing and eating some of the meanest creatures that walk the earth.
這要幾十年不斷捕食地球上其它弱小的動物。
The hardest role in the ecosystem is top predator. Most of the time, you are almost starving.
食物鏈中最難的角色就是頂端的捕食者。很多時候它們都面臨饑餓。
A carnivore knows that no prey animal gives up easily.
食肉動物都知道獵物不會輕易投降。
Herbivores fight fearlessly because their lives depend on it... These animals have to defense it.
食草動物會奮力反抗，因為它們的性命懸此一線...它們必須反抗。
Ankylosaurus is a slow lumbering plant eater.
甲龍是種行動遲緩的食草動物。
It's long slow body is covered in bony plates, and its tail packs a punch.
它又矮又長的身體布滿骨片，尾巴上長了個錘子。
Ankylosaurus itself has a huge mass of bone at the end of its tail
甲龍本身在尾部的末端有一團骨頭，
and there is no leg bone of Tyrannosaurus would stand it.
這可是任何霸王龍的腿骨都承受不了的。
Predators of Cretaceous are gigantic by our standard.
在我們看來白堊紀的食肉動物都是巨大的。
Yet its stature that clearly outclassed by plant eaters.
而身材更龐大的是食草動物。
Carnivores though have one significant advantage. They got brains.
食肉動物有一個突出的優點。大腦發達。
The armered dinosaurs are general, and Ankylosauruses, no exception here, were not bread dinosaurs.
有甲殼的恐龍很常見，甲龍也不例外，不會坐以待斃。
They're probably the dumbest dinosaurs.
它們估計是最愚蠢的恐龍了。
Their brains are really small for the size of their heads and their bodies.
跟身體和頭部的大小比起來，它們的大腦實在太小了。
With preys so stupid, preditors don't need to be geniuses.
獵物如此低能，獵手也無需太過聰明。
Ultimately you really only need to be as smart or smarter than the animals that you are around.
說到底，你只需跟周圍的動物 一樣聰明，或者更聰明一點兒。
7 tons of Tyrannosaurus Rex can do a lot of damage,
7噸重的雷克斯霸王龍破壞力極強，
but a little lecture of brain would make a lot of differences.
了解其大腦構造就感覺不一樣了。
A T. Rex's brain is actually a bit larger than a banana.
雷克斯霸王龍的大腦其實只比香蕉大一點。
A T. Rex's brain is just a thousandth of its body size.
雷克斯霸王龍的大腦只占其身體的千分之一。
Twenty times less brain power than human's.
智力水平比人類低二十倍。
Yet it's significantly larger than that of its plant-eat prey.
但這比它的那些食草獵物的大腦大多了。
What we see in T. Rex is the advance of carniore capabilities were greater,
我們在霸王龍身上看到了食肉動物的能力更強，
its ability to probably solve problems and deal with wrinkle and its evironment.
看到了它們這種解決問題和應對新情況和環境的能力。
Other carnivores are even more dependent on coordinative thought.
其它肉食動物則更依賴于協調能力。
