The breeding season begins in early winter. The oestrus cycle lasts 34 days, although most individuals mate during their first cycle of the year. The female gives birth up to thirty young after a gestation period of 19 to 24 days. Of these, the first to attach themselves to the available teats will be the only survivors."Mammals" Dorling Kindersley Limited, London The young remain attached to the teat for 60 to 65 days, begin to develop fur at around 51 days, open their eyes at about 79 days, and are fully weaned at 150 to 165 days. They reach sexual maturity in their first year and typically live for 2–3 years, but can live for up to 7 years in captivity.
