• Gestation lasts 16 months — one of the longest among mammals.
• Pregnancy in the white rhinoceros lasts 18 months. In the Umfotlozi reserve, this period was accurately determined.

The white rhinoceros typically lives for 35 to 50 years, with a maximum lifespan of 45 years and a theoretical lifespan ranging from 22 years and 6 months to 45 years; the species reaches sexual maturity between 3 years and 5 months and 5 years and 8 months of age. The young are born with their eyes open and begin walking immediately. The embryo develops inside the mother, followed by the infant stage, which lasts from birth until weaning. An adult individual, capable of reproduction, remains in that stage for a duration of 7 to 50 years.