Watch These Ruthless Dinosaur Take-Downs: Video

Whether on land or in the sea, dino fights must have been serious rumbles.

You have to figure dinosaurs had some fierce battles. The kind that must have made the ground shake and sent smaller animals running for cover. Whether one-on-one duels or fights that featured gang tackling, dino fights were brutal.

Here, thanks to the wonders of CGI, we get to imagine what such battles might have looked like. On land and in the sea, we witness the harsh reality of the prehistoric smackdown.