Giant Alligators, larger than any today, lived in the lakes 6,000-10,000 years agoo. One such animal was Deinosuchus. When an unsuspecting animal (usually a dinosaur) such as Parasaurolophus came to drink, it would lunge out, catch the animal, drag it underwater, and eat (sometimes waiting for the animal to drown before it ate).

'size:' 20'(6 metters)-60'(20metters).