I'm only gonna give this as the answer if it's the squirrel things outside Bone Village, because otherwise Google through up 'Mu' way too easy and I feel cheap.
From the one who answers neither yes nor no (basically neither yes nor no means 'mu' apparently)
Comes a striking, almost definitive blow (L4 suicide)
Fear not, for one more time won't take you yet (takes off only 3/4 HP)
But the hot springs just might send you sinking. (it's magic attack, I think it had something to do with gold if I remember).
