Lifespan, longevity, and ageing
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Maximum longevity: 6.6 years (captivity) Observations: In the wild, these animals do not live more than 2 or 3 years. One animal has been known to live 6.6 years in captivity (Richard Weigl 2005). Animals living on predator-free islands, live longer, start reproducing at later ages, have smaller litter sizes, and appear to age slower than their mainland counterparts (Austad 1993).