Chimney is a stray rough collie and the main protagonist of the episode, Chimney.
Chimney is a rough collie with long orange, brown, and white fur, a long snout, with heterochromia. (one eye is blue and the other's green.) He's very big, about the size of Clarence.
Chimney is very exuberant and affectionate dog. He loves to play fetch and interact with his owners.
- It is unknown if Chimney is related to another dog similar to him from "Pretty Day with a Girl".