From : ISRAELDOGS
“In those days when people talked about a police dog, they mostly thought of the qualities of the dog’s nose, qualities that sadly enough were highly overestimated. The dog’s ability to bite and hear was more or less overlooked.
Fortunately, time taught us that the protection qualities of police dogs were very important for actual police work too. The disappointment of not being able to create a miracle dog that could track and find everything everywhere was forgotten.
People came to realize that every dog is an individual, and therefore, every dog is somewhat limited in what it can do. This dictates how a trainer has to go about training this particular dog.
In the early 20th century when this concept was not yet accepted, discussions were held whether all dogs should be trained with a forceful method. The method used depended on the individual dog, however the goal was always the same: to pass the KNPV trial in the discipline that fitted the dog best (tracking or protection).”
read the rest at israledogs.com