Squeak (Wario's Woods)
From the Super Mario Wiki
Squeaks (Japanese: ウマウマ Umauma) are vaguely Ninji-like sheep creatures that only appear in Wario's Woods. They are the most common enemies in the game along with Spuds and Fuzzes; in fact, Squeaks are the first foes to appear. As is with other common enemies, any bomb chain can defeat Squeak. Their name is similar to that of the Squeeks.