Why did T. rex have tiny arms?
Scientists think T. rex used its giant head and jaws, so its arms got small.
Pip’s answer
- Scientists think T. rex used its giant head and jaws, so its arms got small.
- Its tiny arms were still strong, maybe for holding on.
- Big legs did the running, and the long tail helped it balance.
- Hehe, each tiny arm was about as long as a grown-up's arm!
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Can you make tiny T. rex arms and a big roar?
For grown-ups
Tyrannosaurus rex had a huge head and powerful jaws that did most of the work catching food. Its arms were short, about the length of an adult human arm, but muscular. Scientists still debate what they were for; ideas include gripping prey or helping it get up from lying down.
Ask your child: What do you think T. rex used its little arms for?
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