Nauelito. Argentina

In 1997, the Argentine caver Julio Aguaro decided to hunt for Nahuelito. But no matter how much he wandered along the shores of the lake with binoculars and a video camera, no matter how much he peered into the surface of the reservoir, hoping to see the outlines of the monster in the water, he did not want to show himself.

However, in the end, the researcher managed to stumble upon rounded paw prints with a diameter of 50 centimeters. After analyzing the depth of the prints and coastal sediments, Aguaro calculated that the weight of the creature that left the traces should have been several tons.

And when he told the local police about the results of his research, they immediately confirmed that "someone is found" in the lake, and even told that someone's thunderous roar regularly comes from there.