S2 · E6: American Lake Monster

In New Zealand, dozens of dogs fall violently ill after visiting the same beach. Plus, mysterious moving rocks, and cheetahs with eye injuries.

In the Cotswolds, a mystery beast stalks a walker and her pet dog, while in Florida a popular surfing spot is the world's shark-bite capital.

Hundreds of silver fish rain down on a remote community in Australia, whales seem determined to strand themselves, and Alpine ibex scale a dam.

Over Florida, a military jet hits something at 1500 feet, and DNA suggests it was a reindeer. In Africa, elephants attack baobab trees.

On New Year's Eve in Arkansas, 5,000 blackbirds fall from the sky. Meanwhile, in Scotland, a hiker stumbles across a strange translucent jelly.

In Minnesota, a strange hairless creature is found by the side of a road. In Canada, salmon numbers fluctuate crazily.