Lifespan, longevity, and ageing
Observations: The period of pre-implantation usually takes 3.5 to 4.5 months, increasing the gestation time up to 1 year. In the wild, these animals are believed to live up to 21 years (David Macdonald 1985). Their longevity in captivity has not been studied in detail and hence maximum longevity remains unknown.
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