That depends on the person who created the rp. Are you talking about a specific rp? Because if it is one of mine, it is restricted to the Twilight universe. If it isn't one of mine, then you can create whatever you want, but I am not interested in joining.
Well like you even just said yourself I don't like to RP outside of the Twilight verse on this website since that's what it's here for and cat people don't exist in the twilight verse. Plus I really prefer to rp with at least paragraph long replies.