Pam, Tucker does the same thing, just like Ripley. I noticed the other day just how far away he was from the original location. I know I've seen Hannah take a swipe or two at the grass, but she certainly doesn't make the big production out of it, like Tucker does and I doubt that she does it every time. Don't think it is strictly a male or alpha female thing as I remember my other two females doing cover up action too.