It is essential to break your dogs to ferrets from pups if possible to make things easier in the field when they are adults ... Obviously more difficult when its an adult dog ... I have a half door on one of my ferret courts and my young bitch will often jump in there pick up one of the ferrets drop jump back out drop it on the yard and carry on the process until all the ferrets are in the yard where she takes great joy in playing with them lol .......