" A dog that requires no leash or collar, to inhibit his ability to do his job."
If correctly seen as an even potential hinderance on your dogs ability to fully carry out its duties(to the bitter end)....wouldn't this be the optimal/safest/best way to employ such a dog?
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"