A man dumps a cageful of rats into a wire pen, and the audience watches as four fox terriers kill them all.
In an era when terriers seem to be hyperactive play toys, it's good to know they were bred for this very purpose. I have known people who kept them for that, and efficient little fellows they were, too. However, this short makes it seem as if watching them do this were some sort of sport or recreation. Either that, or the elegant lady watching them is deciding which dog to buy.