It is not necessary or productive to motivate a dog with pain, fear, or coercion. Any tool that works by causing discomfort carries the same risk: training this way can have significant side effects such as physical injury, fear, or aggression. A dog's neck is sensitive, with the thyroid gland, trachea, and esophagus all near the front, so it is best to avoid pressure there. A well-fitted harness is the comfortable, kind choice, and management plus high-value treats will get you further than any aversive tool.

Choke and Prong Collars

These are designed to make pulling uncomfortable enough to outweigh the reward a dog gets from reaching where they want to go. Motivating a dog with discomfort or pain is not recommended, because that kind of training can lead to physical injury, fear, or aggression.

Shock Collars (E-Collars)

A shock or e-collar only motivates a dog if it is painful or frightening enough to matter, so the same caution applies. Training with discomfort or pain risks physical injury, fear, or aggression. It is also risky to rely on electronics that can glitch, break, or run out of battery.

Invisible or Electric Fencing

This is a shock collar connected to a boundary, either a buried wire or a GPS line, so it carries all the same risks, along with a few more:

• Your dog can still escape if they are willing to take the shock.
• Your dog can form negative associations with passersby, since they get a warning or shock every time one approaches the boundary.
• Nothing stops strangers or wildlife from crossing the boundary and reaching your dog.

Retractable Leashes

These are not aversive, but they are easy to misuse. Because the line stays taut, a dog who has not yet learned to walk on a loose leash can learn that pulling works. A long line is a safer choice. If you prefer a retractable leash, only use it when your dog:

• Is already trained to walk on a loose leash.
• Is wearing a harness.
• Is not a flight risk if you drop the handle and it "chases" after them.
• Is not near a busy road.
• Is not near other people or dogs.