Lifespan, longevity, and ageing
Maximum longevity: 45 years (captivity) Observations: Even though animals may be sexually mature by age 4, they normally do not reproduce until later. In the wild, a 36-year-old female was still reproductively active. Potential longevity has been estimated at 40-50 years (Ronald Nowak 1999). One wild born specimen was still alive in captivity at about age 45 (Richard Weigl 2005).