Brown Lemmi~g -

: They are found across the tundra regions of northern North America (Canada and Alaska) and eastern Siberia.

: Contrary to popular belief popularized by a 1950s documentary, lemmings do not commit mass suicide by jumping off cliffs. During population spikes, they may migrate in massive groups and some perish accidentally while crossing rivers or falling, but it is not intentional.

: They can become sexually mature as early as 3 weeks of age. brown lemmi~g

: Brown lemmings have rounded bodies with reddish-brown backs and rumps, and grey heads and shoulders.

: 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. : They are found across the tundra regions

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. : They can become sexually mature as early as 3 weeks of age

: They are strictly herbivorous, consuming up to several times their body weight in fresh plant material each day. Their diet shifts from fresh grasses and sedges in summer to frozen green plant material and moss shoots in winter. The Population "Cycle"