Paraguay, 1 million years B.C. A powerful Smilodon called Halftooth must survive on his own after being driven from his clan. South America is a bizarre world of giant sloths, car-sized armadillos and flightless birds the size of dinosaurs. Written by
Did You Know?
The Macrauchenia sounds were actually those of a donkey. See more
After the Megalotherium sloth delivers his fatal blow to one of the Smilodon brothers, his right arm sinks into his torso of a moment - or at least into his bushy fur. See more
For forty million years, the plains of South America have been ruled by an awesome group of predators. The aptly named 'Terror Birds'.
[after a long pause
But recently all this has changed. A new breed of killer has arrived, one fierce enough to terrorize the Terror Birds. Smilodon, the famous saber tooth. The most powerful big cat of all time!