I use a dremel grinder and mine seem to prefer it to having nails clipped. There's an article at http://www.doggiedoor.com/twodogs.shtml on pack dynamics when having 2 or more dogs. Janice, janices@jump.net Linsey (newf), Bianca & Sonny (pyrs) http://www.jump.net/~janices/ Leander, TX