The breeding season lasts from July to January in Victoria, and may be longer further to the north. Females typically give birth to two litters of up to four young in a season, and are able to mate again shortly after the first litter is born. The second litter then enters embryonic diapause, and is not born until the first litter has finished weaning at about 105 days. Multiple paternity is common, even within litters, as the females are sexually promiscuous. The young remain in the pouch for the first 65 days of life, and the maximum lifespan is about five years.