Brown Lemmi~g Apr 2026

The ( Lemmus trimucronatus ), also known as the Canadian lemming, is a vital keystone species of the Arctic tundra. This small, stocky rodent is famous for its extreme population fluctuations—often called "cycles"—which act as a primary "engine" for the entire northern ecosystem. Physical Characteristics

: They average about 150 mm (5.9 inches) in length and weigh between 45 and 130 grams. Males are typically 5–10% larger than females. brown lemmi~g

: They can become sexually mature as early as 3 weeks of age. The ( Lemmus trimucronatus ), also known as

: They possess small ears and short tails hidden in thick fur to conserve heat. Unlike some other species, their coat does not change to white in winter, though it may grow longer and greyer. The ( Lemmus trimucronatus )