One million years ago, South America was a continent of exotic oversized creatures found nowhere else on earth; nine foot terror birds, giant ground sloths and spiky-tailed relatives of the armadillo as big as cars. But the deadliest animal of them all was Smilodon, the largest of all the sabre tooth cats, with canines like carving knives. This programme follows the fortunes of an individual male - Half Tooth. Ousted from his clan by a pair of rival males, his life suddenly becomes a struggle to survive in this alien world. Show less