Flyball is a fast-paced dog sport that involves teams of four dogs racing against each other. Each dog must jump over a series of hurdles, retrieve a tennis ball from a spring-loaded box, and return over the hurdles to their handler. The next dog can only start once the previous dog has returned with the ball. The goal is to complete the relay as quickly as possible, with the team finishing the race in the shortest time declared the winner. Flyball emphasizes teamwork, speed, and agility, making it an exciting event for both dogs and spectators.