The Truth About Killer Dinosaurs  The Truth About Killer Dinosaurs is a two-part BBC documentary, presented by Bill Oddie, in which a group of scientists test out the strength of dinosaur weaponry using biomechanics. The first episode determines the winner of a battle between "Tyrannosaurus" and "Triceratops", and the second compares the strength of an ankylosaur and "Velociraptor". The episodes were broadcast on BBC 1 in August and September 2005. In the U.S., "The Truth About Killer Dinosaurs" was known as Dinosaur Face-Off. These are the episodes and the evidence revealed in them. An even match. In the episode, it is shown that if the "Tyrannosaurus" makes a surprise attack, it might kill the "Triceratops", but if the herbivore discovers the trap, it could beat his opponent and kill it. Outcome 1: (Winner, "Tyrannosaurus")  The "T. rex" is seen stalking the "Triceratops". It suddenly runs out of hiding, and being faster, it overtakes the "Triceratops". The "T. rex" bites into the "Triceratops"' neck, knocks it over, and eats it. Outcome 2: (Winner, "Triceratops") The "T. rex" is wandering through the forest looking for food. It soon comes across two fighting "Triceratops". When the two are done fighting, the "T. rex" singles out one of them as a potential target. After picking its victim, the "T. rex" charges, but the "Triceratops" sees it just in time and turns around to face its attacker. The "T. rex" seizes the horn of the "Triceratops" and breaks it off. The herbivore tries to retreat, but the "T. rex" chomps on the "Triceratops"' frill. After doing a mock charge, the "Triceratops" slashes its horns into the "T. rex's" belly. The "T. rex" limps away, falls down, and slowly dies. The "Triceratops" watches it die and then goes back to foraging. The ankylosaur would win, although "Velociraptor" could easily kill young ankylosaurs, which have easily penetrable armor.