Lifespan, longevity, and ageing
Observations: The total gestation time is about 11 months and includes a 2-3 months period of delayed implantation (Ronald Nowak 2003). Not much is known about the longevity of this species. In the wild, it is estimated that females live up to 18-20 years (Don Wilson and Sue Ruff 1999). One wild born specimen was about 15.8 years of age when it died in captivity (Richard Weigl 2005).