Are Retractable Leashes Bad for Dogs?

Yes, for most dogs and most walks. Retractable leashes teach constant pulling by design, they give you almost no control at the moment you need it, and they cause a specific set of injuries to dogs and handlers. I do not use them and I ask clients to switch before we start leash work. There is one situation where they are genuinely fine, and I will get to it.

I try not to be dogmatic about equipment. Most collar and harness debates come down to fit and technique. This one is different, because the problem is not how you use it. The problem is the mechanism.

They train pulling, by design

A retractable leash works on a spring. The spool applies constant light tension, and the only way for your dog to get more line is to pull against it.

So every step of every walk, your dog is being rewarded for leaning into the leash. Pull, get more freedom, pull, get more freedom. Thousands of reps.

Then owners wonder why the dog drags them when the flat leash goes on. He has been paid for pulling on every walk for two years. That is not stubbornness, it is a very well trained behavior.

This is the reason I care about it. Not the safety statistics, the training math. You cannot teach loose leash walking on a device that makes slack impossible.

The control problem

You cannot reel a dog in. The mechanism does not have that kind of leverage. If your dog is 20 feet out and a bike appears, you have no ability to get him back to you quickly.

The brake fails under load. Thumb brakes slip, especially on a hard lunge, and especially with a dog over about 40 pounds.

Twenty six feet is a long way. That is enough line for a dog to be in the road while you are on the sidewalk, or to reach another dog before you can do anything about it. A lot of leash reactive incidents I get called about involve one dog on a retractable reaching a dog who was minding his own business.

The handle is bulky. In an emergency you cannot get a short grip on the line quickly, and grabbing the cord itself is how people get hurt.

The injuries are specific and documented

This is not theoretical. Emergency departments see these regularly.

To handlers. Rope burns and lacerations, usually from grabbing the thin cord as a dog runs. Finger amputations, most often when the cord wraps a finger and the dog lunges. Falls and fractures from being jerked off balance. Facial injuries when a handle is dropped and the spool retracts and hits someone.

To dogs. Neck and tracheal injuries from hitting the end of 20 feet at a run, which is a very different force than reaching the end of six feet. Cuts and burns on legs from the cord wrapping. Collar failures under sudden load. Dogs pulled into traffic when a brake slips.

To bystanders. Cut legs from a taut cord across a sidewalk, and kids clotheslined by a line they never saw.

The pattern in almost all of these is the thin cord under sudden high tension. That is inherent to the design.

What to use instead

A six foot flat leash for everyday walking. Nylon or leather, one inch webbing, a solid bolt snap. This is the tool for teaching a loose leash.

A fifteen to thirty foot long line for decompression walks and recall work. Flat webbing, not cord. This is what people actually want when they buy a retractable, and it is better in every way. No spring tension, so no training against you. You can grab it anywhere along its length. You can step on it to stop a dog. It costs about fifteen dollars.

If you want your dog to have freedom to roam and sniff, a long line in an open space is the answer. Use it in a field, a quiet trail, or a large empty lot. Not on a sidewalk, where thirty feet of line is a hazard to everyone.

A four foot leash for city walking or crowded areas.

The one situation where a retractable is fine

A small, calm, well trained dog in a wide open area with no traffic, no other dogs, and no people, where you are using it purely as a long line and your dog does not pull.

That is a narrow case, and honestly if you have that dog and that space, a flat long line does the same job better. But I am not going to pretend a nine pound elderly poodle on a retractable in an empty park is a crisis.

Where it is never appropriate: any dog over about 25 pounds, any dog who pulls, any dog with any reactivity, any sidewalk with cars, any vet waiting room, any trail with other dogs, and any dog you have not trained a recall on.

If you are switching

Expect a rough two weeks. Your dog has been rewarded for tension thousands of times and the flat leash will feel like a fight at first.

Stop moving forward the instant the leash goes tight. Every step forward on a tight leash is a paid rep.

Pay heavily at your side. Every three to five steps for the first week.

Change direction when tension starts, before it becomes a drag.

Give a sniff release word so he still gets freedom, just on your terms rather than by pulling.

Three weeks of that resolves a meaningful share of pulling in most dogs, and it is the same work you would need to do regardless of what is on the other end of the leash.

My free Loose Leash blueprint covers exactly that mechanic, including the release word and how to structure the first two weeks after a switch. Download the Loose Leash blueprint.

Ready to train your dog?

Every drill in this article comes from the WorldWide K9 Academy course library. If you want the full step by step system, start with the $5 intro course.