How many babies can a black rhino have a year?

Since Google gives the gestation period as 15 to 16 months, and the mama rhino has to raise the baby to where it can survive on its own, 2 to 3 years. Because of their aggression, black rhinos have a high mortality rate even without human intervention (read poaching.) So, I’m guessing from .1 to .3 babies a year, possibly less. read more

On the black rhino, the front horn can grow to 20 to 51 inches (51 to 130 centimeters), while the rear horn can grow to about 20 inches, according to the International Rhino Foundation. A white rhino's horns are slightly smaller, and a Sumatran rhinos horns are about 10 to 31 inches (25 to 79 cm) for the front and less than 3 inches (7 cm) for the rear. read more