Mighty Mite, I think either a: to many birds in a small area, or b: to many birds in a big area, or c: to much pressure on birds, as a pup, meaningwhoaing, or even just talking, we don't think its nothing but the dogs sometimes do.Catwalking is a long time thing to cure. Usually takes alot of hunting and fewer birds, and honestly I have better luck doing it of a horse, and a nother dog. It will make it hard to read the dog later, better be careful!!! Thanks Jonesy