The animal with the bite strongest of the world is the aligátor of the Mississippi, a cousin of the alligator found in the quagmires of the Mississippi and other states southeastern of the United States. Bocada of it reaches 1000 kilos almost, the equivalent to place a sharp set of teeth in a part of its body and, after that, to locate on it one another object of 1 ton! To calculate the intensity of the bite of animals, one of the methods it is to make with that the animal bites a device that registers the power of the attack. As the animals nor always bite with the same force, the results vary. Here, we use as reference the work of Gregory Erickson and Kent Vliet, of the State University of the Flórida, and Brady Barr, the canal National Geographic.