The term Migrating Rodent is a reference to the LEMMING, a small rodent that lives in the Arctic tundra. Lemmings are known for their mass migrations, which can involve hundreds or even thousands of individuals. During these migrations, they often cross large bodies of water and travel long distances. The migrations are thought to be triggered by overcrowding and food shortages. Lemmings are also known for their ability to survive in harsh climates and their tendency to follow each other without hesitation.