This has been bugging me for a while as I can't find any reference to the pig in either the manga or the TV series, but in the opener while the background goes "YEAH YEAH!" and the 4 animals show up, you have Kakashi's dog, Naruto's frog, Kiba's dog, and some random pig. Can anyone tell me if that Pig is actually in the show or manga and at least give me some closure on this, cause it's driving me nuts.