Years ago,I worked for a guy who took his dog with him everywhere. One day a call came from a jewelery company located on the first floor of an old mill building. They were looking to expand onto the second floor. Boss took the dog,of course! After suveying the work,as they were making their way down the stairs , they passed a place where it was possible to see out over the drop ceiling of the office. Well, the dog saw a mouse run across the ceiling and he promptly gave chase!! Got about 20ft. before he fell through,landing on a girls desk while she was typing! We didn't get the job.