Dr. Gregory Erickson, from Florida State University, conducted a 10-year study that measured the jaw strength of 23 crocodile species. The strongest result (mentioned above) was received from a wild saltwater crocodile. The largest reptiles grow up to 7 meters (22.9 ft) in length, with a mass of up to 2 tons, so the bite force might vary. Sometimes crocodiles attack boats, actually biting through them.