Egg Block

Egg Blocks are special blocks in the Yoshi series. The most common type is green; however, in Yoshi's Story, they are the color of the Yoshi the player is currently using. When one of the Yoshis hits this block, a Yoshi Egg will come out. Only a maximum of six Yoshi Eggs can come out from the green egg block (since this is the most eggs a Yoshi can hold), and the yellow and red egg blocks turn into either a Yellow Egg or a Red Egg, respectively.

Square Egg

 * In Super Mario 64 DS, if Yoshi swallows a wooden box, the Egg he creates will be in the shape of a cube, just like Egg Blocks.
 * In Super Mario Sunshine, in a secret level in Pinna Park, there are four colored Yoshi Egg Blocks, colored magenta, green, blue, and black.