Anacondas became massive 12 million years ago — and it worked so well, they haven't changed size since

Live ScienceTuesday, December 2, 2025 at 9:03:14 PM
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Anacondas became massive 12 million years ago — and it worked so well, they haven't changed size since
  • Anacondas reached their massive size approximately 12 million years ago, a development that allowed them to thrive even as other giant reptiles faced extinction due to cooling temperatures and reduced habitats. This remarkable adaptation has enabled them to maintain their size without significant changes since that time.
  • The persistence of anacondas as large reptiles highlights their successful evolutionary strategy in a changing environment. Their ability to survive and thrive where others have failed underscores the resilience of this species and raises questions about the ecological factors that support their continued existence.
— via World Pulse Now AI Editorial System

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