Dogs are instinctively great security agents. Even small dogs alert their owners to perceived dangers like fire or unwelcome intruders; whereas, larger dogs, in addition to warning of potential threats, can be trained to provide protection on command. Police dogs assist in enforcing security; they are able to smell everything from explosives to drugs and are vital components in many search and rescue operations. Sheep herders use dogs to protect and move f ... Tags:breed registry, Chihuahua, Commercial breeders, companion
