Black caiman (Melanosuchus niger) A black caiman (Melanosuchus niger) entering the water. Although black caimans are able to hunt on land, they strike primarily from the water to surprise their prey. (more) Are Black Caimans Larger Than Alligators? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/Are-Black-Caimans-Larger-Than-Alligators Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Written by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... The Editors of Encyclopaedia Britannica Last Updated: Sep 12, 2025 • Article History Table of Contents Table of Contents Ask the Chatbot Black caimans (Melanosuchus niger) are the largest members of Alligatoridae, a family of reptiles made up of eight living species. Even though American alligators (Alligator mississippiensis) have a reputation for being large and menacing, black caimans—the dominant predators of the Amazon River basin—are larger. While some American alligators can grow up to 4.5 meters (15 feet) long and weigh as much as 363 kg (800 pounds), they still fall short of the maximum size of black caimans. Average-sized adult black caimans typically reach lengths of 4 to 5 meters (13 to 16 feet) and weigh approximately 350 kg (770 pounds), ...(100 of 206 words)

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