From the Super Mario Wiki
A Glad Fang.
Glad Fang is an glad variant enemy on Vibe Island in the game Super Princess Peach.
Glad Fang, like a normal Fang, flies around, but unlike the normal Fang, which will fly right at Princess Peach, Glad Fang will usually fly around randomly, similar to Glad Blooper.
According to the game's Glossary, it "dances happily and attacks!"