Two dinosaurs, the Tyrannosaurus rex and Parasaurolophus, have been brought to life by Japanese scientists.

The T-Rex robot is 3.5 metres long and 1.5 metres high, and weighs 87 kilograms. In comparison, the real-life T-Rex was around 13 metres long and 4 metres heigh, and weighed around 5 to 7 metric tons.

The Parasaurolophus robot is 3.5 metres long and 1.6 metres high, and
weighs 85 kilograms. The real life Parasaurolophus was around 9.5 metres long and weighed about 2.5 metric
tons.

Read more:

• ABC News article (Australian Broadcasting Corportation)
• Wikipedia - Parasaurolophus 
• Wikipedia - Tyrannosaurus