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.
Thirteenth installment of the True-Life Adventures series of nature documentaries produced by Walt Disney.