This site is for active large dogs and their owner – that’s you. Their size and their strength should be a great thing, not a setback. How do you want to harness that? If you want them to learn manners, a no-pull harness or collar will change both of your lives. But if they like pulling and you like adrenalin? Harnesses designed for lightweight pulling joined to a tug line and bungee/shock line can then be joined to your existing bike with a bike arm, or to a canicross belt to help you jog faster. Or maybe you just want your Labrador to have the coolest clothes but whenever you order the XXL size it looks like it’d fit a Schnauzer. Or maybe your dog has a huge tank chest like both of mine do, and can’t fit store bought harnesses!