Sabre Tooth
1 million years ago, Early Pleistocene (Paraguay) Filming location: Brazil
The fifth episode shows the strange fauna of the isolated continent of South America and explores the effects of the Great American Interchange, which had happened 1.5 million years earlier. Since South America had drifted apart from Antarctica 30 million years ago, many unique mammals had evolved, including the Doedicurus, an armored armadillo-like mammal with a cannon ball-sized spiked club on its tail; the Macrauchenia, a camel-like mammal with a long trunk; and the Megatherium, a giant ground sloth. Before the continents of South America and North America collided, a 10-foot-tall predatory terror bird called Phorusrhacos, had reigned as top predator. However, the great cats migrating from the north, soon displaced them as top predators. The episode focuses on a male Smilodon, a sabre-toothed cat, called Half Tooth, whose leadership of a pride is threatened by two males who are brothers and work together against him. The rival males ultimately chase off Half Tooth (actually Half Tooth backs off wisely without any serious injuries, feeling that the two males would be too strong for him), kill his cubs, and take over his pride. Next, the episode shows the Smilodon cats hunting down Macrauchenia and trying to protect the young from the two brothers (in vain). In the background, "terror birds" still hunt, but give way to the Smilodon. However, a Megatherium, who wanted to eat meat as diet supplement, charges the pride of Smilodon, in order to eat some of the carrion. In the process, the Megatherium kills the dominant rival male, enabling Half Tooth to return, kill the other male and reclaim his territory. A year later, his mate had another litter of cubs.
Animals: Smilodon · Phorusrhacos · Macrauchenia · Megatherium · Doedicurus
Trailer
Recently Updated Shows
Lost Treasures of Egypt
An immersive, action-packed series follows international teams of Egyptologists as they unearth the world's richest seam of ancient archaeology — Lost Treasures of Egypt. Through excavations and unprecedented access to the teams on the front line of archaeology, we follow these modern-day explorers as they battle searing heat and inhospitable terrain to make the discoveries of a lifetime.
Invasion
Earth is visited by an alien species that threatens humanity's existence. Events unfold in real time through the eyes of five ordinary people across the globe as they struggle to make sense of the chaos unraveling around them.
Skywatch
Skywatch tells the story of an outcast teen, who hacks into a ubiquitous drone delivery system to pull a prank on his school bully, he accidentally crashes a dangerous prototype – and finds himself entangled in a life-and-death conspiracy. Based on the short film by the same name.
Alien: Earth
When a mysterious space vessel crash-lands on Earth, a young woman and a ragtag group of tactical soldiers make a fateful discovery that puts them face-to-face with the planet's greatest threat. As members of the crash recovery crew search for survivors among the wreckage of a mysterious crashed space vessel, they encounter mysterious predatory life forms more terrifying than they could have ever imagined. With this new threat unlocked, the search crew must fight for survival and what they choose to do with this discovery could change planet Earth as they know it.
Signs of a Psychopath
For every sadistic psychopath...there were signs. Charm. Narcissism. Lack of empathy. Impulsiveness. Manipulation. Deception. These traits and others are the telltale Signs of a Psychopath. This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?