From the Super Mario Wiki, the Mario encyclopedia
A Poison Cherbil is a floating enemy from the game Super Paper Mario. These green sub-species of Cherbils can be found in several locations such as the Dotwood Tree, the Underwhere or the Flipside Pit of 100 Trials in room 9. They breathe out a yellowish-green gas that poisons the player, while slowly bobbing up and down in the air. They often drop Dried Shrooms.
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