Let me say this straight out. COLLIES are not for protection dog training. If you want a PROTECTION TRAINED dog, no collies. Nothing against collies as pets. But we TRAIN PROTECTION, POLICE K9, SEARCH & RESCUE, COMPETITION dogs. As well as we have a lagre pet training program. Everyone has posted good opinions. But I'm telling you as a trainer. If you want a serious protection dog, look into the breeds German Shepherds, Belgian Malinois, Dutch Shepherds . If you want a possibly protection dog. Maybe Rotties or Dobermans. I suggest that you look into some protection dog sports and see what dogs are prevailant in those sports. Also look at some web sites to see who is training what. Here are some suggested web sites.
www.lawsonk9.com
www.leerburg.com
www.tarheelcanine.com
www.badenk9.com
www.germanshepherddog.com