Otomys
Most species live in marshlands, grasslands, and similar habitats[2] and feed on the vegetation of such areas, occasionally supplementing it with roots and seeds.The name "vlei" refers to the South African term for intermittent, seasonal, or perennial bodies of standing water.Otomys are compact rodents with a tendency to shorter faces and legs than other types of rats.Species living in warm or temperate regions tend to have unusually large ears for murids (e.g. Otomys irroratus), whereas some of the alpine species, such as Otomys sloggetti have markedly smaller ears.Depending on the species adult Otomys have a body length between 12 and 22 cm (5–9 inches) and weigh 90 to 260 grams (3–9 oz).