The black caiman is a reptile in the alligator family. As of November 2026, it is the largest kind of caiman. It lives in the Amazon, a huge river area in South America. It likes slow rivers, lakes and flooded land. A black caiman can grow longer than 4 metres. The biggest old males can be longer than 5 metres. They can weigh more than 400 kilograms. Its skin is dark.
A grown black caiman is among the biggest predators in its part of the Amazon. A predator is an animal that hunts other animals. It often hunts at night. It eats fish, such as piranhas and catfish. It may even eat animals as big as a capybara. A capybara is a big rodent of South America. A young black caiman eats insects and small animals. As it grows, it eats bigger prey, such as fish.
In the dry season, a mother black caiman builds a mound nest for her eggs. A mound is a pile of earth. The nest holds about 40 eggs. The eggs take about two to three months to hatch. The mother stays close to her nest. The eggs often hatch when the rainy season begins. She opens the nest, and the babies stay together in groups. Adult black caimans make loud, rumbling sounds that other black caimans can hear.
People hunted black caimans for their skins, which make shiny black leather. Hunting cut the number of black caimans by about 99 percent in the 20th century. That is an estimate. Clearing forest and burning swamps destroys black caiman homes. It slows the recovery of their numbers. An older Red List category for the black caiman was Lower Risk, Conservation Dependent, which means it needs conservation work to stay safe.
As of March 2013, some countries, such as Brazil, had given the black caiman legal protection. In 1990, Bolivia began a program to breed black caimans in captivity and set them free in the wild. Captivity means life in human care. The black caiman lives in slow rivers, lakes and flooded land in the Amazon.
Words to know
- predator: animal hunter
- rodent: gnawing animal
- mound: pile of earth
- estimate: careful guess
- captivity: human care
