Some dinosaurs did their hunting at night, new research suggests.

Studies of the eyes of existing birds and reptiles with different daily activity patterns were compared with similar parts in dinosaur fossils.

The results suggests that small, meat-eating dinosaurs were nocturnal; large, plant-eating dinosaurs tended to forage both during the day and at night.

The Science study also challenges the notion that mammals' nocturnal nature evolved to avoid day-active dinosaurs.

Lars Schmitz and Ryosuke Motani of the University of California Davis have been looking at the eye parts of dinosaurs, and their modern-day descendants the lizards and birds, for a number of years.

They have been trying to determine just how big and how light-sensitive dinosaurs' eyes would have been.

http://www.abc.net.au/news/stories/2011/04/15/3192042.htm?section=justin

As seen in the image above, the dinosaur was fully equipped with night-vision goggles on a helmet... The dinosaurs of our times have some of those as well...