Sluggy

Sluggies are hairy slug-like enemies found in Super Mario World 2: Yoshi's Island. They come in three colors: green, red, and blue. Sluggies can fall on Yoshi from the ceilings. The only place they appear in is Sluggy the Unshaven's fort.

Trivia
Sluggy the Unshaven is the only notable Sluggy in the Mario series. Sluggys are small and are fairly simple creatures