I have owned a personal training studio for 10 years with multiple trainers working for me. (coachcalorie.com)
It's not uncommon for us to encounter people who have had multiple trainers in the past that have tried and failed with their dog, let us be your last! (fountaincitydogtraining.com)
Unlike many breeds, they actually do well with multiple trainers however ultimately require a firm, consistent pack leader. (petguide.com)