This picture was filmed in Alberta, Canada, which is not a native habitat for lemmings. They were imported from Manitoba for use in the film, and were purchased from Inuit children by the filmmakers. The Arctic rodents were placed on a snow-covered turntable and filmed from various angles to produce a "migration" sequence; afterwords, the helpless creatures were transported to a cliff overlooking a river and herded into the water. The entire sequence was faked using a handful of lemmings deceptively photographed to create the illusion of a large herd of migrating creatures. It was this film that perpetuated the myth in popular culture of lemming suicide, something that's never been reported to have occurred in real life.