Jeli
From PinataIsland.info, the Viva Piñata wiki
The existence of a Yeti species of piñata called Jeli has been questioned since the PinataIsland.info episode guide was updated on September 23, 2006 with a description of an episode called "The Abominable Jeli". It is unknown whether this species may exist in the form of a future Downloadable Content for the game.
Lime variant