Why did ‘Tyrannosaurus rex’ have such short arms?

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. What did the T. rex use its little arms for? – Aurora, age 11, Pemberton Township, New Jersey One of the most famous dinosaurs to ever roam across…