Top 20 ugliest animals on the planet (4)

Alligator Snapping Turtle（大鳄龟）

This is definitely a creature that you do not want to insult. The Alligator Snapping Turtle is the oldest still-existing reptile around and one of the largest freshwater turtles in the world. It is found primarily in the waters of the southeastern United States. This big guy is quiet most of the time, but bites when threatened. The great strength of its bite can easily break a human finger. Equipped not only with a ferocious mouth, the turtle also has three rows of spikes on its back.

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