Paradeinonychus

Paradeinonychus was bred as an amphibious, high-speed hunter. It combines the powerful legs and body of a Parasaurolophus with the lethal claws and teeth of a Deinonychus. Like the Parasaurolophus, it can stay underwater for extended periods of time, giving it a distinct predatorial advantage of being able to submerge under water while chasing prey, which would think that it either gave up the chase or drowned, only to be surprised that it had been out flanked from underwater. It runs in large, vicious packs.