From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Doghouse&oldid=2242645"
Doghouse is Undodog's first official course in Super Mario Maker, released on November 4, 2015. It is set in the ground theme for its main area and the underground theme for its sub area, as well as in the Super Mario Bros. game style.
The level begins with a house-like structure, with a Warp Door. Mario must enter the Warp Door to get a Mystery Mushroom, then break the Brick Blocks and head to the right. Upon reaching two warp pipes facing left, Mario must hit a P Switch and follow the coin trail into a warp pipe. In the next segment is a structure made to resemble a cat, with Goombas resembling fecal matter. After some conveyor belts, Mario must hit a P Switch and continue to the left to a warp pipe, which leads him directly to the Goal Pole.