CUMMING — Pigs may not fly, but such is not always the case with dogs. Rucker Pet store held the Rucker Falling for DockDogs event Saturday, allowing pets to compete in jumping competitions and proud owners to put them on display.The Dixie Dock Dogs, an affiliate club of DockDogs Worldwide, is the only such club in Georgia where dogs participate in the sport of dock diving. Although the club began in 2008 with only four members and three dogs, the group has grown to more than 100 members and close to 100 dogs since.