You might wonder how long a dinosaur lived. If you wonder this, you are not alone! Scientists have spent a bunch of time trying to answer this question, but a final answer depends on a lot of different things. One of the things we still don’t know about dinosaurs is whether they were warm-blooded or cold-blooded. If dinosaurs were cold-blooded, some of them might have been able to live for over a hundred years! If dinosaurs were warm-blooded, they might have lived for less time. Also, the answer to this question would have depended on other stuff, like the body size of the dinosaur. All-in-all, the one thing we know for sure about dinosaur lifespans is that we still don’t know a whole lot at all!