Lifespan, longevity, and ageing
Maximum longevity: 35.8 years (captivity) Observations: Males become proven breeders at 6 years of age, even though they can become sexually mature before they are two years old (Virginia Hayssen et al. 1993). One wild born animal was still alive after 35.8 years in captivity (Richard Weigl 2005).
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