• In captivity it has lived about 10 years.

The monjon has a typical lifespan of from 4 to 7 years, although its theoretical lifespan extends from 5 years 10 months to 12 years 5 months. The species reaches sexual maturity at an age ranging from 1 year to 1 year 10 months. An embryo develops rapidly inside the mother before birth; afterward, the young lives in the mother’s pouch, is nourished by milk, and grows for a duration of from 5 months to 6 months and 3 weeks. The eyes of the young open between 4 months and 5 months and 1 week. The species then transitions into an adult stage, which lasts from 1 to 7 years, during which time it is capable of reproduction and independent foraging.