They have already gone through a variety of other training techniques from the owners and potentially other trainers. (raisingcanine.com)
The purpose of a workout partner is to have someone by your side who can push and motivate you, give you a spot, help you with some forced reps or other training techniques where a partner is needed, and someone to help keep you accountable and on track. (nuts-n-more-thespread.com)
You should use other training techniques to deter bad behavior, not crating. (raisingspot.com)