Many Spirit Realms exist in the world of Housepets!. They exist in between Heaven and Earth.
It is possible that the home of the "Spookmaster" from Scaredy Cats and the nightmarish void Max was pulled into could be a Spirit Realm.
One spirit realm appeared in We're Snowed In! where Spirit Dragon fought against a Frost Giant which was causing a snow storm in Babylon Gardens. There was given no specific purpose for this realm, but it's possible that it is connected to the weather in the real world, as the entire realm appears to be in the sky.
|Dimension Prime||Babylon Gardens | Good Ol' Dogs Club | River Ridge | Three-Squares Mall | River Ridge Zoo | Reuben's Farm | Australia|
|Celestial||Heaven | Chambers of Spirit | Heaven's Court | Spirit Realms|