Best harness for Brussels Griffon with breathing issues

A Brussels Griffon with brachycephalic breathing issues — that changes the harness brief significantly. Most small dog harnesses sit right across the sternum or have a narrow front strap that compresses the chest, and for a dog already working harder to breathe, that's the last thing you want. The harness needs to spread load across the back and shoulders without any pressure on the ribcage or sternum at all. Small dog harnesses have specific fitting challenges too — most are too loose around the chest or too rigid for compact, barrel-chested builds like a Griffon's, and the right fit for them is very different from a Dachshund or a Chihuahua. Can you tell me roughly how much your dog weighs, what you're mainly using the harness for — daily walks, vet trips, something else — and have you had problems with previous harnesses slipping, riding up, or causing any visible discomfort?

That red mark is a classic sign of a sternum bar sitting in the wrong place — a really common problem with cheaper small dog harnesses that have a single rigid crosspiece right across the chest. The slipping-toward-the-neck issue is equally telling: it usually means the harness isn't shaped for a deep-chested, short-bodied dog, so it migrates forward under any leash tension. Both problems are genuinely risky for a brachycephalic dog. I want to ask one more thing before I point you at something specific: does he pull at all on the lead, or is he generally easy to walk? That affects whether I'd lean toward a back-clip or a design with a front attachment point.

Perfect — that makes this cleaner. For a non-pulling 5kg Griffon with brachycephalic concerns, I'd go straight to the Ruffwear Front Range Harness in size XS. Here's why it works specifically for your situation: it uses two padded contact points — one at the chest and one across the back — but crucially the chest pad is wide and contoured, not a narrow strap or rigid bar. That distributes any pressure across the broad part of the chest rather than concentrating it on the sternum or near the throat. It also has a low-profile, step-in design that sits naturally on a barrel-chested small dog without riding forward. The aluminium V-ring sits on the back, so there's zero leash tension transferred to the chest or neck area. At 5kg your dog will be at the bottom of the XS range — Ruffwear's sizing is genuinely precise, so I'd measure his girth (just behind the front legs) before ordering, and their chart is reliable. It stays put on deep-chested small dogs in a way that cheaper harnesses simply don't.

It's one of the easier ones to fit, which matters a lot with a wriggly dog. You step the front legs through first, then clip a single buckle on the back — no need to go over the head at all. The webbing is soft and light, so it doesn't clunk around him when you're positioning it. The one thing to do the first couple of times is go slowly and reward him through the process so he associates it with something good rather than the fuss itself. Once he's used to it you can have it on in about ten seconds. Given his history with the red mark and the slipping, I think he'll notice the difference quite quickly — the fit is just fundamentally better suited to his shape.

Good luck with it — he sounds like a lovely dog and it's clear you're being really thoughtful about his comfort. The main thing to check when it first arrives is that you can fit two fingers under every strap easily, and that the chest pad sits on his breastbone rather than up toward his throat. If it's sitting correctly, you should see no skin redness at all after a walk. Hope it works out well for both of you.