This is the first form Naruto has taken under the influence of the Nine-Tailed Fox. Naruto's eyes turn a ferocious red, his whiskers increase in size, his hair becomes a little more animal like, his fingernails and teeth grow sharp, and he runs on all four of his limbs. In addition, Naruto gets an energy boost from the Demon Fox's chakra, healing his wounds, increasing his speed, and giving an extra bang to his attacks. Naruto is conscious at this level and is able to control and summon this stage at will after receiving training from Jiraiya.