scamperer
/ˈskæmpərər/
noun
- A person or animal that runs quickly and playfully, especially in short bursts.
- As a child, she was a notorious scamperer, always racing through the hallways.
- The puppy was a happy scamperer, dashing across the lawn after every butterfly.
- The squirrel, a nimble scamperer, darted up the tree trunk in seconds.