A deadly Allosaurus ambushes its prey | Planet Dinosaur - BBC

At 9 metres and 1.5 tonnes, Allosaurus was a formidable Jurassic hunter. But its bite was surprisingly weak - so how did it make a kill? This episode focuses on the Jurassic period, a time when the first giant killers stalked the Earth and lurked in the seas - and the slightest advantage meant the difference between life and death. In North America, the iconic allosaurus, an ambush hunter with a lethal bite, dominated. Not even the heavily armoured stegosaurus was safe from this killer, and incredible evidence reveals a glimpse of a vicious battle between these two giants.