Surmising even the physical appearance of a dinosaur - or any extinct animal - based on its fossils is a tricky proposition, with so many uncertainties involved. Assessing a dinosaur's intelligence, considering the innumerable factors contributing to that trait, is exponentially more difficult.
Item 1 of 2 Visitors look at a 67 million year-old skeleton of a Tyrannosaurus rex, named Trix, at the French National Museum of Natu ral History in Paris, France, June 6, 2018. REUTERS/Philippe Wojazer/File PhotoVisitors look at a 67 million year-old skeleton of a Tyrannosaurus rex, named Trix, at the French National Museum of Natu ral History in Paris, France, June 6, 2018.
"Our key findings are that the brains of most dinosaurs, including T. rex, were comparable in relative size to those of living reptiles, such as crocodiles and alligators.
"Their conclusion hinges on a single extremely important point: whether theropods like T. rex shared their relationship with their extant warm-blooded ostrich and chicken cousins, or with their more distant living relatives, crocodiles. I said the former, because I compared theropods to ostriches and chickens; they now say the latter," Herculano-Houzel added.There are problems in trying to gauge intelligence from brain neuron count, Caspar said.
"The 2023 study assumed a 100% fill in dinosaurs such as T. rex, and that was certainly not the case," Caspar added."However, looking at living animals, we see that neuron counts are actually not a good indicator of intelligence in the first place, although that might appear intuitive at first glance," Caspar added.. In two centuries of scientific study, dinosaurs are coming into better focus, though plenty of uncertainties remain about Tyrannosaurus and the others.
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