"The Celebrated Jumping Frog of Calaveras County" is a short story written by Mark Twain in 1865. It tells the tale of a man named Jim Smiley, who is known for betting on anything and everything. He trains a frog named Dan'l Webster to jump higher than any other frog, using it to win bets against unsuspecting challengers. The story is set in Angel's Camp, California, during the Gold Rush era. When a stranger comes to town, Smiley challenges him to a frog-jumping contest. However, the stranger tricks Smiley by filling Dan'l Webster with quail shot, leading to a humorous and unexpected outcome.