Well I cannot say that I have ever used a leash with my cats, and I have to say I think that it would be a little bit strange. That said, though, I can definitely see this being something that varies a little bit with locations, much like the whole indoor cat outdoor cat discussing. It makes me wonder if a lot more people uses leashes in more crowded cities or more urban areas like New York City and places like that. Or maybe it is a cultural thing, where you might see Europeans doing it more or something. I am not sure, but it is interesting to think about regardless, so thank you for sharing.