Alligator Snapping Turtle (Macrochelys temminckii)

Alligator snapping turtles are the largest freshwater turtle species in the world. They have large and heavy heads, while their thick shells resemble the scales of an ancient plated dinosaur called Ankylosaurus. You can differentiate them from the common snapping turtle by the three ridges of spikes on their carapaces. Their habitat is in the fresh waters of the United States. 

Their colors are brown, grey, black, and olive green. Unlike other turtles, the male alligator turtle is bigger than its female counterpart. Adult turtles can weigh as much as 80kg and grow up to 31.8 inches long. Also, they have a long life span, ranging from 20 to 70 years. They are scavengers and active hunters, so their diet consists of dead and live fish.