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Ripley's Believe It or Not by Ripley’s Believe It or Not! for August 04, 2021
August 03, 2021
August 05, 2021
More From Ripley's Believe It or Not
So pterosaurs were warm-blooded, predecessors to mammals, which for the most part don’t fly; and dinosaurs were cold-blodded and predessors to birds, which for the most part do fly.