Some Dinosaurs May Have Been as Intelligent as Primates

There is a controversial study that some dinosaurs, such as the Tyrannosaurus rex, have dense brains like those of the primates of today. This would mean that these great lizards were extremely smart and that the conclusions of the previous scientists were not accurate. Dinosaurs may have also learned how to use tools.

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https://www.science.org/content/article/some-dinos-may-have-been-brainy-modern-primates-controversial-study-argues