Go Dog, Go! Every endurance athlete knows the feeling of totally running out of energy, or "Bonking." You might be surprised that dogs can "bonk" too. Keep you active dog going with Zuke's PowerBones, the all-natural canine performance treat. Power Bones are made with the right balance of quick-burning and slow-burning carbohydrates, plus they contain the optimal balance of protein, fat and fibers dogs need when they are working, playing or competing hard.