I confess following. Several years ago, a goat which was (and is) reared in the campus of Tottori University of Environmental Studies (Students take care goats, and I am a responsible person for their activity) got out of their pasture area and entered a school building. It was midnight. I met the goat, and thought "You should not be here". But I , after looking at her face, said "Welcome, I know it was big travel" and spent much joyful time with her. Cleaning the area where she walked around in the building was big work for me, especially droppings.