Harness or collar: what should your dog walk in?

Collars and harnesses both have a place. For walking, many trainers and vets lean toward harnesses for dogs that pull and for breeds with delicate necks. Collars remain the easiest place to keep ID tags.

Quick comparison

	Flat collar	Harness
Pressure on the neck when pulling	Yes	Spread across chest and shoulders
Holds ID tags	Yes	Some have a tag ring
Easy to put on	Very	Takes a few seconds more
Control of a pulling dog	Limited	Better with front-clip designs

Harness types

• Back-clip: leash attaches between the shoulders. Comfortable and easy, good for dogs that don't pull much. Can encourage pulling in strong pullers.
• Front-clip: leash attaches at the chest. When the dog pulls, it turns them sideways, which helps reduce pulling.
• Dual-clip: both attachment points, so you can use whichever suits the walk.
• Step-in: the dog steps in with its front legs. Easy for dogs that dislike things over their heads.

Many trainers prefer a Y-shaped front strap that sits on the chest and doesn't cross the shoulders, so it doesn't restrict the dog's stride.

When a harness is the better choice

• Flat-faced (brachycephalic) breeds such as pugs and bulldogs, which can have breathing problems.
• Small breeds prone to tracheal collapse.
• Dogs that pull hard, where a collar would put repeated pressure on the throat.

Collars

• Flat collars with a buckle or clip hold ID tags and are fine for walking dogs that don't pull.
• Martingale collars tighten slightly when pulled so the dog can't back out of them. They're often recommended for sighthounds like greyhounds, whose heads are narrower than their necks.

Whatever you choose for walking, keep ID tags and contact information on your dog, usually on a flat collar.

Getting the fit right

• Two-finger rule: you should be able to slide two fingers under any strap.
• Behind the legs: the strap behind the front legs shouldn't rub the armpits; check for chafing after the first few walks.
• Not slipping off: the dog shouldn't be able to back out of it when you gently pull forward.
• Measure the chest girth (the widest part behind the front legs) and neck, then use the manufacturer's size chart.

Car travel

A walking harness isn't designed to protect a dog in a crash. For car travel, look for a harness that has been crash-tested, such as those certified by the nonprofit Center for Pet Safety, or use a secured crate.

Questions people ask

Do no-pull harnesses work?

Front-clip harnesses can reduce pulling, but they work best combined with training that rewards a loose leash.

Should my dog wear a harness all day?

Many vets suggest removing harnesses when not walking, to prevent rubbing and matting under the straps.

Can puppies wear a harness?

Yes. Choose an adjustable harness and check the fit often as they grow.