Though not nearly as aggressive as their maneater African cousins, male American crocs can weigh up to 2,000 pounds and have been known to snatch cattle on occasion; their normal diet consists of fish, aquatic birds, and small mammals. They’re fast on land (10 miles-per-hour) and in water (up to 20 miles-per-hour), and have the world’s most powerful jaws, with a bite force that is up to 10 times greater than a Rottweiler’s.