Lemmings

One of the most persistent biological myths is that lemmings commit mass suicide by jumping off cliffs. This misconception was largely popularized by the 1958 Disney documentary , which staged a "death march" that never actually happens in nature.

Lemming populations are famous for their dramatic fluctuations, often peaking every 3 to 5 years. These "lemming years" are crucial for the Arctic environment: Lemmings

: In winter, they live in extensive tunnel systems beneath the snow, which provides insulation and protection from predators. One of the most persistent biological myths is