Chris Weeks / AP

Brent Bloom urges on his frog "Jumping Bob" at the Jumping Frog Jubilee on May 20, 2012 in Calaveras County, Calif.

The Jumping Frog Jubilee at the Calaveras County Fair was first held in 1928, inspired by a short story written by Mark Twain. The event is taken extremely seriously by the competitors, who have to adhere to a long list of rules and regulations.

Follow @msnbc_pictures

Chris Weeks / AP

Daz Belt and his frog "Over the Edge" compete at the Jumping Frog Jubilee.