Alligators have a powerful bite but the muscles that open the jaw are relatively weak. An adult human could hold the jaws of an alligator shut with their bare hands.

The wolf is the ancestor of all breeds of domestic dog. It is part of a group of animals called the wild dogs which also includes the dingo and the coyote.

More than 100 professional cyclists participate in the Tour de France every year and the race is over 3,200 kilometers.

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