Do:

Change direction. Whenever the dog pulls in any direction, go the opposite way. If they pull left, turn right; if they lunge ahead, turn around and walk the reverse direction.

Plant yourself. Walk forward with your dog on-leash. The moment they start to pull, plant your feet and don’t budge. Call them to you and walk back a few steps until they meet up with you.  Be sure to reward the good behavior, and start walking again.

Consider a harness. If you have a puller, damage to the neck and trachea can occur more easily with a collar.  A harness will not only distribute the pull to help prevent injury, it will also prevent a wiggle worm from escaping out of their collar.

Don’t:

Jerk the leash. Instead, smoothly change direction. Most dogs will react to pressure by pulling harder, which is ineffective.

Let the walk continue. If you keep walking, you’re rewarding your dog for lunging ahead. If you speed up, you’re teaching your dog you want to go even faster.

Use a retractable leash. Retractable leashes teach your dog that when they pull, they get to go further.  Reserve stretchy or retractable leashes for walks once fully trained.

Use pinch, choke, or prong collars. These collars can cause injury to a dog’s neck, spine and windpipe—especially with smaller dogs or dogs with respiratory issues.  If one of these collars gets caught, they can cause your dog to choke.  While these products can help deter your dog from pulling instantaneously, the only true way to teach your dog not to pull is to take the time and effort to train them correctly.