And finally we have the alligator snapping turtle I would love to have one as a pet but It might be illegal whatever, these turtles look prehistoric and it’s a solitude ambush hunter can weigh about 220 pounds and can grow 26 inches in shell length. They can remain submerged for long periods of time by letting excess air out of their mouths then sink to the bottom, their lifespan is 20-70 years which is a long time.