Troã–Don: quick facts

Based upon its brain-to-body-weight ratio, Troödonmay have been the most intelligent dinosaur. Aside from its largebrain, it had large eyes, suggesting a nocturnal lifestyle. The position of the eyes

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Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.