. I hooked them both up to a brace
A very long time ago, before I had Basenjis, I used to walk and train dogs for people. My constant companion was a small GSD crossbred, and she helped me teach many dogs recall in a similar fashion. I would attach them together by the collars, and she would bring the dog with her when I called. One time, her head was down and the other dog pulled away, and she slipped her collar. Tippy understood what had happened. From then on, when she had to stop and turn the other dog, she sat back on her hindquarters like a roping horse, held her head high to retain the collar, then brought the dog back to me! Dogs are smart!