Squeak

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.

Trivia

 * Squeak's name comes from onomatopoeia for the sounds released by certain animals, such as mice.
 * Their name is similar to that of the Squeeks.
 * They resemble Moos from the Klonoa series.