Leash and collar?

So I've had this fantasy for years that I would love to wear a leash and a sexy choker that has a ring on it like for a dog. I would LOVE to have the guy I'm seeing do this but I'm curious as to like.....how does that even work? Does he tug on the least while you're having sex or hold it while you're doing it? Do you behave like an animal? Is it for submission? Idk, something about kneeling in front of my man in that kind of submission pose and giving him all the power and him holding my leash is just so sexy to me.