From the Super Mario Wiki
The Super Big Tap-Tap is a large, golden Tap-Tap that destroys platforms and rocks as it rolls through a set path, intending to crush a Yoshi. This enemy only appears in Yoshi's Island DS. Yoshi has to take Baby Mario, the fastest of the babies in Yoshi's Island DS, with him to survive this giant enemy's rampaging. After hitting a Super Big Tap-Tap with an egg, Yoshi can see it in the Island Museum in the giant enemy exhibit whenever he wishes.
- ^ Yoshi's Island DS Prima guide, page 30.