i've run cur dogs for best part of 30 years now, and it has to be said that the owner does make an enormous difference to the dog. yes failures do occur, but have you ever wondered why most professional rabbiters use collie crosses? a cur dog is capable of so much more than just lamping, mine will ferret and lamp with the best of them, we used to take deer up to fallow size, most would catch hares ( not always with fair law, but even then some would put up a reasonable show), hunt up, catch feather, work to the gun in or out of water, any kind of terrain and be almost unbreakable, track shot d