In the slow motion videos below, my border collie Venture demonstrates a wrap at 26″ while Brittany Schaezler’s sheltie Trek takes a wrap at 14″. Note how both dogs maneuver each individual leg to avoid knocking the bar down. Jumping requires concentration, coordination, strength and energy. If your dog is not properly conditioned, he may lack the strength. If your dog is physically tired, he may lack the energy and coordination. If your dog is mentally fatigued, he may lack the concentration. The next time your dog drops a bar, take a moment to appreciate the effort required to perform a wrap around a wing without knocking the bar!