The most important thing about the alligator is that they spend most of its lives in the water. They have a spiked shell, bearlike jaws, and thick scaled tail. The alligator snapping turtle is the largest freshwater turtle in North America. Adult snappers has no natural predators other than humans. They are mostly found in rivers and in lakes too. But the most important thing about alligator snappers spend most of lives time in the water.