Burrbert

Burrbert is an enemy that appears in Yoshi's Woolly World. They are only found in World 6-6, Feel Fuzzy, Get Clingy. Burrberts have spikes surrounding their orange bodies and can hurt Yoshi because of this if he touches one. They can be found stuck to the moving Velcro conveyor belts or walls in the level, some of which are generated from Warp Pipes.

Yoshi can hit a Burrbert with a Yarn Ball, which will prevent Yoshi from being damaged by it temporarily. Unlike most enemies, they cannot be destroyed by a yarn ball nor Yoshi himself.

Trivia

 * Their name derives from the word Burr meaning a rough edge.