vole

Any of various rodents of the family Cricetidae, subfamily Microtinae, distributed over Europe, Asia, and North America, and related to hamsters and lemmings. They are characterized by stout bodies and short tails. They have brown or grey fur, and blunt noses, and some species reach a length of 30 cm/12 in. They feed on grasses, seeds, aquatic plants, and insects. Many show remarkable fluctuations in numbers over 3-4 year cycles.

The most common genus is Microtus, which includes 45 species distributed across North America and Eurasia.