"I'll give you a rare, valuable Cucco, if you're interested... Its name is Cojiro, and it used to be my brother's Cucco. Its blue body is quite charming."

Cojiro is a quest item from The Legend of Zelda: Ocarina of Time. It is a mysterious blue Cucco that belongs to Grog. Cojiro has blue feathers, but is otherwise identical in appearance to other Cuccos in the game. According to Grog, only "nice guys" can encourage Cojiro to crow. It is part of the quest for Biggoron's Sword.

After proving his ability as a Cucco handler by making the Pocket Cucco happy, Link receives Cojiro from Anju. Since the departure of the original owner, Anju's brother Grog, Cojiro has ceased to crow, and Anju hopes Link will be able to make Cojiro happy again. When Link shows Cojiro to Grog in the Lost Woods, Cojiro crows, which makes Grog assert that Link is a "nice guy". The man takes Cojiro back and asks Link to take the Odd Mushroom to Granny in Granny's Potion Shop. It is unknown what Happened to Cojiro when Grog became a Stalfos.