Why did T. rex evolve small arms?
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Fossil studies show T. rex arms were about 1 meter long, with strong muscle attachments, capable of lifting significant weight (relative to their size). Comparisons with earlier tyrannosaurids, like Gorgosaurus, show a trend of arm reduction over millions of years. No definitive consensus exists, as the fossil record doesn't preserve behavior, but these theories are grounded in biomechanics and evolutionary patterns.
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