Star Yoshi

Star Yoshi is a form of Yoshis that only appears in the game Yoshi and its Game Boy counterpart Mario & Yoshi. In the game, putting lower and upper halves of a Yoshi Egg together would make a Yoshi slip out of the egg. If there are seven characters between the two halves (which is the maximum), the emerging Yoshi would be a Star Yoshi and award the player with 500 points. The Star Yoshi basically looks like a regular Yoshi, except that there is a Star floating above him.