0
Alligators and Caimans belong to the family Alligatoridae, and both can be distinguished by their U-shaped, broad snouts that are usually smaller in length than that of the Crocodile and Gharial. Crocodiles and Gharials belong to the family Crocodilia, and both are usually larger than alligators and caimans. Gharials are easily distinguished by their very long and very narrow jaws, and so they can only eat fish and are not a danger to humans. Crocodiles, on the other hand, have slightly narrower, but longer, jaws than alligators, and their food can comprise from anything ranging from insects to wildebeest. Alligators and Caimans have jaws designed to crush bone, whereas Crocodiles are designed to tear and rip flesh. Alligators have an average bite force of 3200PSI (pounds per square inch), but some of the larger crocodiles (such as the nile and saltwater) are said to have bite forces exceeding even 5000PSI. The American Alligator usually reaches a length of 14.5 FT and weigh anywhere from 500 - 1000lbs. Most caimans are fairly small when compared to alligators and crocodiles, but the Black Caiman can exceed these lengths and some have been recorded to reach 19 - 21 FT! Gharials are large crocodilians, and some can reach lengths of 5 - 6m, rivaling those of the saltwater and nile crocodiles. Though they are large, their jaws are not designed for ripping flesh or crushing bone, but for simply eating fish, so they are no harm to humans - they're more likely to be scared of you! The Crocodile's size can range from the smallest, the Dwarf Crocodile which is usually only 6ft, to the largest, the Saltwater Crocodile which can reach lengths of 23ft but 19ft is a more common average. The Saltwater and Nile Crocodiles are the most aggressive of all the crocodiles, and the most powerful - they are responsible for killing at least 50 people a year. In general, crocodiles are much more aggressive than alligators. Hope this helped :)
