Possessing a large head, large body and a thorny apricot, a turtle in North America makes many people think of prehistoric dinosaurs.

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Alligator snapping turtle (AST) is the only subspecies of Macrochelys. They are one of the largest freshwater turtles in the world, distributed in North America. (Photo: Flickr)

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This turtle has a big head, a strong jaw, a thorny, slender jaw, so they are often called 'monster turtles'.

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In the natural environment, a "monster turtle" can live up to 200 years old. (Photo: markoshea.info)

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Their shape makes many people think of ancient dinosaurs. (Photo: wordpress.com)

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Their favorite food is fish, rotting animal carcasses, invertebrates, amphibians, snakes, and even smaller turtles. In captivity, they can eat almost all types of meat. (Photo: doubleknot.com)

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'Monster turtle' has gray, black or brown apricot. (Photo: keywordpictures.com)

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When living in the water, their shells are disguised by a layer of algae that helps them hide and hunt. (Photo: blogspot.com)

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The weight of an adult child reaches 80kg, 100cm long. This species' weight record belongs to an individual weighing 183kg. (Photo: projectnaoh.org)