Claim: During the filming of the 1958 Disney nature documentary White Wilderness, the film crew induced lemmings into jumping off a cliff and into the sea in order to document their supposedly suicidal behavior.
Origins: Lemming suicide is fiction. Contrary to popular belief, lemmings do not periodically hurl themselves off of cliffs and into the sea. Cyclical explosions in population do occasionally induce lemmings to attempt to migrate to areas of lesser population density. When such a migration occurs, some lemmings die by falling over cliffs or drowning in lakes or rivers. These deaths are not deliberate “suicide” attempts, however, but accidental deaths resulting from the lemmings’ venturing into unfamiliar territories and being crowded and pushed over dangerous ledges. In fact, when the competition for food, space, or mates becomes too intense, lemmings are much more likely to kill each other than to kill themselves.
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