![]() ![]() His first calf, Theo, was born in December 2017, and left Toronto in late 2021 for the Greater Vancouver Zoo. This will be the second calf sired by 15-year-old male white rhino, Tom. The gestation period for a cow is about nine months long. ![]() The duration of this period varies between species. She is trained to participate in voluntary ultrasound examinations which allowed the Toronto team to confirm the pregnancy and monitor the calf’s early development. Published on: Gestation Period For Cows & All Other Mammals For mammals the gestation period is the time in which a fetus develops, beginning with fertilization and ending at birth. A white rhino’s gestation period lasts 425-496 days (approximately 16 months), and staff expect Sabi will give birth some time between early September and late October. “They say it takes a village to raise a child, and at the Toronto Zoo this is certainly the case as we prepare for newborns”. “We are overjoyed with the news of Sabi’s pregnancy, and it is such a great example of how the various Zoo teams work closely with one another,” says Grant Furniss, Director of Wildlife Care, Toronto Zoo. Following continual adjustments in husbandry and diet, Sabi’s behaviour in spring 2022 suggested that her hormonal cycles had switched from the subfertile long cycles to the typical cycle length. This long breeding interval is tied to a long gestational period of 530 to 550. This is the time between conception and birth when the baby rhino develops inside the. Following her arrival in Toronto in 2012 the zoo’s Reproductive Science team identified that she exhibited "long" estrus cycles, which have made conception a significant challenge for her. In addition, white rhinoceros average shoulder height is 1.71 to 2.85 m. The gestation period for rhinos typically lasts between 15 to 18 months. Toronto Zoo's White Rhino Sabi Is Pregnant! On Mother’s Day weekend Toronto Zoo staff announced their 13-year-old white rhino Sabi is expecting her first calf! While every rhino pregnancy is exciting, Sabi’s is especially so. ![]()
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