Best harness for Boxer puppy pulling

A Boxer puppy who's already pulling at four months — you're absolutely right to tackle this now, because those habits calcify fast and Boxers are strong dogs. Harness fit is everything here: a poorly fitted harness restricts movement, causes chafing, or just doesn't redirect the way it should. Front-clip is a smart call for early training — it steers the dog back toward you when they lunge forward, which is exactly the feedback a young dog needs. What's your pup's current chest measurement, and roughly how much does he or she weigh right now?

Perfect, that's really helpful. Broad-chested and 9kg at four months — she's going to be a solid dog. The broad chest is actually the detail that matters most here, because some front-clip harnesses sit awkwardly on deep-chested or barrel-chested breeds and end up rubbing the armpits or sitting crooked on the sternum. Has she worn any harness before, or are we starting from scratch?

Right, that's the moment to switch. Good that you're doing it now rather than waiting until she's 25kg. For a broad-chested Boxer puppy at this size and age, my clear recommendation is the PetSafe Easy Walk Harness in Medium. It's specifically designed for front-clip use — the martingale loop sits across the chest, not the throat, and when she pulls forward it turns her body sideways rather than letting her power through. It fits the Boxer chest shape reliably, it's adjustable enough to last her a few more months of growth, and it's simple to put on which matters when you've got a wriggly puppy. The nylon can rub if it's too loose under the armpits, so fit it snug — two fingers under each strap, no more.

Honest answer — you'll probably get three to four months out of it before she outgrows it, depending on how fast she fills out. The Medium PetSafe Easy Walk adjusts quite a wide range, but a Boxer going from 9kg to potentially 25–28kg adult weight means you'll be sizing up at some point. That said, it's not expensive, and using a proper front-clip harness consistently through this training window — roughly four to eight months — will make a real difference to her adult leash manners. It's worth the investment even if it's not a forever harness. When she's fully grown and trained up, you can reassess whether you still need front-clip or can move to a standard back-clip for comfort.

Good choice. Fit it properly from day one — chest strap across the sternum, belly strap sitting just behind the front legs, nothing loose enough to twist. Give her a few sessions indoors just wearing it before you go outside so she's not dealing with harness-novelty and pulling-excitement at the same time. You're catching this at exactly the right age.