Naruto S01 E45 Surprise Attack! Naruto's Secret Weapon!

The battle between Naruto and Kiba draws to a close, with each of them giving it everything they've got. After being tricked by Naruto, Kiba can no longer rely on Akamaru's help. Naruto decides now is the time to release his new jutsu, only Kiba won't give him time to prepare it!