Puffer

Puffers are creatures who inhabit Blargg's Boiler in Yoshi's Story. One also exists in the Magma Castle. They seem to be some sort of elephant. They shoot balls of energy, which tend to light up the place. Puffers are a favorite food of a Light Blue Yoshi and Yellow Yoshi. If a Puffer is eaten, it'll turn into a green-spotted egg.

Profiles

 * Shogakukan guide: ここだけの話だけど、黄色と水色ヨッシーの大好物. (Just between you and me, they are Yellow and Light Blue Yoshis' favorite food.)