The Original reason that I switched from Purina hi Pro to Pro plan was what hunter mag is talking about. I could not keep weight on my dog, so i would feed him more so then his kennel looked like he was sharing it with a bunch of cattle their was so much stool.I switched to pro plan and I feed half as much, the dog is in great shape even today for a 12 year old and You could use the stool in a sling shot for ammo.