When the dog walks well on the way there and only pulls on the way back, he has probably learned that a certain direction quickly leads to something important. It could be water, food, rest, reunion with someone or simply distance from an environment that makes you uncomfortable. Treating the behavior as disobedience ignores the most useful information: the change happens at a predictable point and in a predictable direction.
Training starts with figuring out what “back” means to that dog. Next, it's worth making the transition less obvious, rewarding steps with a loose guide and adjusting the duration and difficulty of the walk. Stopping like a statue can help in some moments, but it alone does not resolve rush, fear, heat, fatigue or a routine in which arrival always unlocks the biggest prize.


