The main inspiration was basically because there's no dinosaurs that eat only live bait or fish (Pteranodons excluded) These creatures would spend most of their time in water, they would hunt by waiting for prey to come by for a drink or walk too close, goats, dinosaurs and humans included, if they're starving they'd leave to search for prey. they would drag prey into the water and eat from there or just eat fish, creatures like Sarcosuchus, koolasuchus,Deinosuchus and Metriorhynchus would be examples of creatures that would be included. They could only kill dinosaurs that can be hunted (Compsognathus, Gallimimus and so on) Raptor dinosaurs including velociraptor deinonychus and dilophosaurus would jump out of the way before being grabbed and counter attack, causing the crocodilian to take some damage, Lastly if the player has secrets of dr wu installed and has a troodon the crocodilian will jump out, grab the troodon, the troodon will bite but be killed in the process, the crocodilian will be poisoned what else happens is up to you.