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.
Lemmings are characterized by their compact bodies, short legs, and stumpy tails. They typically measure between 10 to 22 cm (4 to 7 inches) and possess long, soft fur that can range from sandy yellow to slate gray. Some species, such as the , undergo a seasonal molt, turning white in winter to provide camouflage against the snow. These rodents are well-adapted to extreme cold:
: They have flattened claws on their front feet specifically designed for digging through snow and frozen ground.
