| Only two Microtus species, the Tarabundi Vole and the Guatemalan Vole, have two mammary glands on the abdomen and four on the chest. With six nipples, a female could theoretically nurse six babies at a time. However, there is evidence that Tarabundi Voles give birth to just one offspring at a time. These medium-large, blackish-brown rodents are found only on a relatively isolated mountain range in Oaxaca, Mexico, in dense forests at elevations of 1,600 to 2,500 meters. Their diet in the wild has not been documented. Captive voles, when offered a variety of wild plant matter, ate grass but preferred the stems and leaves of wild strawberry plants.
Head and Body: - 3.3-4.1 times as long as tail; Total Length: 143-167 mm (males); 155-170 mm (females); Tail: 31-40 mm (males); 34-39 mm (females)
31-46 g males; 27-38 g females
Goodwin, G.G., 1966. American Museum Novitates, 2243:1.
Mammal Species of the World
Mammalian Species, American Society of Mammalogists' species account