Humans help train various dog breeds to enter in competitions such as breed shows, agility and obedience contests, racing and sled pulling.

A top freestyle swimmer achieves a speed of only 4 miles per hour. Fish, in contrast, have been clocked at 68 mph.

Only two people signed the Declaration of Independence on July 4th, JohnHancock and Charles Thomson. Most of the rest signed on August 2, butthe last signature wasn't added until 5 years later.

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