Flyball races match two teams of four dogs each, racing side-by-side over a 51-foot long course. Each dog must run in relay fashion down the jumps, trigger a flyball box, releasing the ball, retrieve the ball, and return over the jumps. The next dog is released to run the
course but can't cross the start/finish line until the previous dog has returned over all 4 jumps and reached the start/finish line. The first team to have all 4 dogs finish the course without error wins the heat.
Jump height is determined by the smallest dog on the team--this dog, called the "height dog," is measured at the withers (with the minimum jump height being 7" and maximum jump height is 14").
NAFA (North American Flyball Association) tournaments are divided into division so that teams compete against other teams of equal abilities. All dogs including mixed breeds are eligible to complete and earn titles in NAFA sanctioned tournaments. Titles are earned via a point system based on the time it takes a dog's team to complete each heat race.