英语听力：2013-06-14 完美捕食 Perfect Predators —19

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Even the toughest most well-armed man-eaters regularly come face to face with prey⁴ that can kill them. Whether you had the jaws⁵ of a Tyrannosaurus Rex, or are armed to the teeth like a raptor, every hunt just might be your last.

 

--To think about predation, it is very dangerous both for the prey and for the predator².

 

--There are many specimens⁶ that have puncture⁷ wounds and open sores when they died.

 

An injury, even a minor⁸ one, can stop a predator from hunting -- a virtual guarantee of death by starvation. 

 

--The life of a carnivore was so hard. They were beat up. They were all beat to hell before they became a fossil.

 

--It's not like Africa-Asia today where you have lots of small animals and just one or two big things like elephants and rhinos⁹. We are talking about an entire landscape that’s filled with herds¹⁰ of multi-ton herbivores.

 

For carnivores toddy, just as during the Cretaceous, staying alive is no mean feat¹¹.

 

--If we look at lives of living predators today, they're pretty short lives. Each individual life does not span its potential. Whenever they become older and weaker, they're most susceptible¹² to injury. And every time you hunt, you’re putting your life on a line.

 

In the world of dinosaurs¹³, predators stop at nothing to survive. They used every tool in their arsenal¹⁴, brains, eagle eyes, stealth flight, super hearing and an advanced sense of smell. But in the end, those who live by the claw sometimes died.

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