Naval Bud
Naval Bud is a young species of a Piranha Plant which appears in the Yoshi (series). It is associated with its mother, Naval Piranha. It's simply a vine of Naval Piranha in its bud stage with its vines bearing thorns.
Games
Super Mario World 2: Yoshi's Island
Naval Bud first appears in Super Mario World 2: Yoshi's Island.
In the game, this foe tries to attack Blue Yoshi by stretching itself to Blue Yoshi in order for attacking him with its spiky thorns. Aside that, these foes cannot be defeated unless their mother, Naval Piranha, is defeated.
Tetris Attack
Two Naval Buds reappear in Tetris Attack.
In this game, the two Naval Buds once again aid their mother in a battle against the Yoshis, but this time in a game of Tetris.