E1-01-Extreme Survivors 极限生存

In a world of terrifying creatures, being small means facing danger at every turn.

If you were a small animal, the Late Cretaceous would have been an awful time to be around.

For a youngster, every day is a struggle to stay alive.

Their only chance is to keep out of trouble and grow up fast.

If you're a Tyrannosaur, every mega-herbivore in the environment wants to crush you.

Dinosaurs develop advanced tools to survive, astonishing on the outside and on the inside.

And now, 65 million years on, cutting-edge imaging technology will peel back skin, muscles, and bones to reveal the secrets of nature's greatest success story.

The largest dinosaurs grow as tall as a six-story building and weigh 50 tons or more. No land animal today even comes close.

The jaws of a T. Rex can leave a bite mark over a meter long. And his 30 centimeter teeth can penetrate deep into flesh.

But every dinosaur, no matter how big or powerful, begins life very small.