Rock-A-Bye Chatsworth is the thirty-eighth episode in the first series of the TV show Chuggington. In this story, Olwin gets her paintwork scratched at the stone quarry by a few rocks and Harrison had made the loudest snore while the whole of Chuggington was asleep.
Olwin gets her paintwork scratched at the stone quarry while loading up. When she runs away, Harrison makes her run. Harrison gets rocks in his system and makes a loud snore while he was asleep that night, that keeps everyone up all night, especially Chatsworth who spent the whole day doing runs. When Harrison goes to the repair shed, they find the rocks and Harrison does everyones work while the whole of Chuggington sleeps.
- Old Puffer Pete
- Irving (cameo)
- Calley (cameo)
- This episode's title is a reference to the song "Rock-a-Bye Baby".