Banging your head against a wall uses 150 calories an hour.

Dogs have four toes on their hind feet, and five on their front feet.

The ant can lift 50 times its own weight, can pull 30 times its own weight and always falls over on its right side when intoxicated.

A cockroach will live nine days without it's head, before it starves to death.

Polar bears are left handed.

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