Orrorin is a funny name for a kind of animal that isn't around anymore. Scientists found some bones of this animal in Africa, so they know a little bit about what it looked like and how it acted.
Orrorin was kind of like an early version of us humans! It had long arms and legs, just like us. But, it also had some differences. For example, it was covered in fur like an ape. It also had bigger teeth so it could eat tough foods like plants.
Even though orrorin looked different than us, scientists think it's special because it might be one of the first animals that learned to walk on two legs like we do. That's pretty cool!
Scientists are still trying to learn more about orrorin so we can understand how humans evolved and got to where we are today.