Page "Yoshi's Story" Paragraph 7

If Yoshi eats six pieces of the same fruit in a row, a Heart Fruit will come parachuting across the screen.

By eating this special item, Yoshi will become Super Happy for a limited time, giving him special powers, including invincibility, infinite eggs, longer tongue, and improved flutter jumps.

In addition, if Yoshi performs a ground pound when Super Happy, he can smash all bubbles visible on the screen, while Shy Guys will turn into Lucky Fruit, and peppers will turn into coins.

In contrast, should the Smile Meter be reduced to a frown, it will only take one hit before Yoshi collapses.

If this happens, the Yoshi is captured by Toadies and brought to Baby Bowser's castle.

However, if a Yoshi has been kidnapped, they can still be retrieved if the player succeeds at finding a white Shy Guy and completing the course with him.

Notably, though, this character is only available in Story Mode, and can only be found if a Yoshi has been lost.

The game will end if all the remaining Yoshis have been captured.