The Muttshroom is a Chimera that appears in the railway tunnel between Tazmily Village and the Clayman Factory in Chapter 4 of Mother 3. Its appearance is simply a white-furred dog that has pink mushroom caps for its head and body. It is a stronger and more aggressive than the Ramblin' Evil Mushrooms found in the same area. This enemy is first encountered by Lucas and Boney.
This enemy is quite dangerous to the lower-levelled. Despite that it drops a good sum of DP and EXP, its attacks can deal moderate-to-high damage without fail, the most fearsome of its attacks being "mushroom headbutts" and "unleashing a biting fury".
Its battle sound is Battle Sound 31 which falls under Code Numbers 852 for regular attack, 853 for Smaaaash! and 854 for Miss.
- The Muttshroom is a portmanteau of the words "mutt" and "shroom."
- This enemy is known to be created from a stray yellow dog with a Ramblin' Evil Mushroom.