In this video I’m sharing what every Cavalier parent should know before buying a harness, and I’m doing it in the most helpful way I can—by showing you how seven different Y-style harnesses actually look and move on my Cavalier, Stewart. You’ll see each harness on his body while he walks, sits, and lies down, because fit isn’t just about a quick standing photo. I want you to be able to visualize placement and movement on a real Cavalier frame before you spend money. I personally prefer a Y-style harness because it allows the shoulders to move naturally and helps take pressure off the neck and spine. That matters for Cavaliers, especially since some may have Chiari malformation. I also explain why the “best” harness is not one-size-fits-all—every Cavalier’s body and sensitivity is a little different, and those long, beautiful coats can make fit look deceptive on camera. My biggest takeaway: don’t just look—use your hands to feel the harness placement. And if you want the full details, measuring help, and my shopping list, I made a complete harness guide you can download, plus Stewart’s harness review on the blog.