The Ins and Outs of Serpentines When Pigs Fly: Part 1 By Jane Killion, photos by Louis B. Ruediger The least technical way to define a serpentine is any arrangement of obstacles that requires your dog to make a snake-like path through them, alternately turning away and toward you as he takes the obstacles. Here is a diagram of the most obvious serpentine arrangement. 2 1 3 Almost everyone can recognize this as a serpentine. 52 Clean Run | July 09