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Iguanas encompass a broad array of lizard species, most notably the green iguana, widely kept as pets and native to parts of North and South America. Other species include the marine and desert iguana. Given this diversity and their widespread presence, iguanas face numerous predators across different ecosystems.
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Birds of prey—hawks, eagles, and owls—are primary predators of iguanas, targeting both adults and eggs. Waterbirds such as herons also feed on marine iguanas, especially during nesting periods. These reptiles are most vulnerable just before giving birth and when they are fully grown.
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In arid and tropical regions, venomous snakes kill and consume desert iguanas, while green iguanas fall prey to boa constrictors and related species. Occasionally, larger ground lizards will also feed on iguanas.
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While mammals are not natural predators of iguanas, invasive species such as rats, dogs, and cats prey on them in their native habitats. In Florida, pet iguanas are threatened by domestic dogs, raccoons, and even humans who hunt and eat them.
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Crocodiles and alligators have been observed attacking green iguanas. These encounters may be defensive rather than typical predation, yet iguanas occasionally raid the eggs of these amphibians.
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Marine iguanas face threats from larger predatory fish, notably tiger sharks, which consume a wide variety of marine life.
Understanding these predators is essential for conservationists and pet owners alike, informing habitat management and care strategies.
