Egg Block

Egg Blocks are special blocks in the Yoshi series that are the color of the Yoshi the player is currently playing. When one of the Yoshis hit this block, the Yoshi Eggs will come out. Only six Yoshi Eggs can come out from the green egg block, and the red and yellow egg blocks actually turn into either a yellow egg or a red egg.

Square Egg

 * In Super Mario 64 DS, if Yoshi swallows a small, brown block, the Egg he creates will be in the shape of a cube, just like Egg Blocks.