Common habitats are shallow ponds, shallow lakes, or streams. Some may inhabit brackish environments, such as estuaries.
Snapping turtles are omnivores, consuming both plant and animal matter, and are important aquatic scavengers; but they are also active hunters that prey on anything they can swallow, including many invertebrates, fish, frogs, reptiles(including snakes and smaller turtles), unwary birds, and small mammals.
Snapping turtles have fierce dispositions; however, when encountered in the water, they usually slip quietly away from any disturbance. Snapping turtles have evolved the ability to snap because unlike other turtles, they are too large to hide in their own shells when confronted. Snapping is their defence mechanism. However, these turtles rarely bite humans; they usually flee when threatened.