I can't leave Kalib out, so here is a story about disappearing moose butts, absent the butts themselves

I suppose it is very unfair of me to post a picture of his brothers and then leave Kalib out altogether. When they first arrived, as he and his brothers came through the front door and caught the attention of most of us, someone else, maybe Melanie, saw two moose charge past the back door. By the time I could respond and get to the back door, all any of us could see were two moose butts, disappearing into the trees. I wonder what frightened them so? Do you think it might have been the racket and commotion caused by the three little boys coming in through the front door?