T. rex's Tiny Arms Were Actually a Brilliant Hunting Trick!

Scientists just figured out why T. rex had those funny little arms—they weren't needed because its massive head and super-strong jaws did all the work! As dinosaurs evolved bigger, more powerful bites, their arms got smaller and smaller because they didn't need them to catch food anymore. It's like nature decided: who needs arms when you have the most powerful bite in the world?