
I’m a proud harness user. I trained my papillon to walk nicely whatever he’s wearing, but there are multiple reasons why I choose a good well-fitted Y-shaped harness for ordinary walks.
Small dogs are more prone to tracheal collapse. It’s not worth the risk - he doesn’t pull but I can’t guarantee that nothing will ever happen that puts enough pressure on his neck to cause a debilitating condition.
We like to do impromptu dog parkour on walks, and a harness for safety and support is essential. If he’s on a collar, we can’t play.
Lifting him quickly by the lead on a harness has saved him from dog attacks several times. Grabbing him when he’s under threat like that is very risky, he’d be terrified and I might hurt him. I certainly couldn’t lift him as fast.
Even if I didn’t use it for the lead, I’d still use one for his flat ID tag. His collar of course has one as well, but he’s tiny with a ruff of long hair on his neck and anyone finding him would need to fiddle about with his collar trying to find it. Not a happy time for a nervous dog. A tag on his harness can be read without touching him.
And similarly, while we’ve worked hard on “collar grab” and attaching/detaching lead and he’s done very well, he’s very much more comfortable and relaxed if the lead goes on/off the harness. Messing with his neck is far more involved and difficult for both him and me than using the back harness clip.
I do very much dislike the H-shaped harnesses like the ubiquitous Julius K9 which restricts movement and can be backed out of. River’s is a Y-shaped Perfect Fit which is sized exactly for him, has a strap going from the chest to the belly between the front legs, it’s padded with fleece, the chest strap sits well clear of his elbows, nothing restricts his shoulders.