Lemmings are little rodents, and like many of these species, they are quite vigorous in the reproduction part of life, especially norwegian lemmings. Populations can fluctuate greatly and quickly, but we didn't always know exactly why. For centuries, people came up with a lot of quite goofy explanations. From lemmings raining from the sky in storms to committing mass suicide by juming off cliffs, we heard everything. That last idea though, wasn't born from just speculation. One guy was responsible for bringing this theory forth : Walt Disney. In his 1958 documentary "White Wilderness", a…