The adults are solitary in nature, coming together only for mating.
Mating does not have a seasonal pattern but births tend to be towards the end of the rainy season in more arid environments.

When in season the females will mark dung piles.
Males will follow females when they are in season; when she defecates he will scrape and spread the dung, making it more difficult for rival adult males to pick up her scent trail.

Courtship behaviors before mating include snorting and sparring with the horns among males.
Another courtship behavior is called bluff and bluster, where the rhino will snort and swing its head from side to side aggressively before running away repeatedly.
Breeding pairs stay together for 2–3 days and sometimes even weeks.
They mate several times a day over this time and copulation lasts for a half-hour.

The gestation period for a black rhino is 15 months.
The single calf weighs about 35–50 kilograms (80–110 lb) at birth, and can follow its mother around after just three days.
Weaning occurs at around 2 years of age for the offspring.
The mother and calf stay together for 2–3 years until the next calf is born; female calves may stay longer, forming small groups.
The young are occasionally taken by hyenas and lions.
Sexual maturity is reached from 5 to 7 years old for females, and 7 to 8 years for males.
The life expectancy in natural conditions (without poaching pressure) is from 35 to 50 years.
The adults are solitary in nature, coming together only for mating. Mating does not have a seasonal pattern but births tend to be towards the end of the rainy season in more arid environments.
When in season the females will mark dung piles. Males will follow females when they are in season; when she defecates he will scrape and spread the dung, making it more difficult for rival adult males to pick up her scent trail.
Courtship behaviors before mating include snorting and sparring with the horns among males. Another courtship behavior is called bluff and bluster, where the rhino will snort and swing its head from side to side aggressively before running away repeatedly. Breeding pairs stay together for 2–3 days and sometimes even weeks. They mate several times a day over this time and copulation lasts for a half-hour.
The gestation period for a black rhino is 15 months. The single calf weighs about 35–50 kilograms (80–110 lb) at birth, and can follow its mother around after just three days. Weaning occurs at around 2 years of age for the offspring. The mother and calf stay together for 2–3 years until the next calf is born; female calves may stay longer, forming small groups. The young are occasionally taken by hyenas and lions. Sexual maturity is reached from 5 to 7 years old for females, and 7 to 8 years for males. The life expectancy in natural conditions (without poaching pressure) is from 35 to 50 years.
Black rhinoceros