Everyone knows now because he went 8 tails when pain was attacking and the secret out and about.
Shippuden Episode 43.
The very first episode of Naruto, episode 1.
That would be episode 29 actually that isn't nine tails its 1 tail
see there is know one show that he turns to six-tailed the best is naruto vs pain
246 and beginning of 247
Yes naruto does go five tails one time, i dont know what episode though. But in episode 437 naruto goes six tails!!! the highest hes gone so far is ALL NINE!!!!!!
"Nine-Tails Unleashed"
no there is only nine tails and naruto doesnt hate sasuke
the episode is uknown during naruto shippudin tunada kakashi and jarya and yamoto discus about how dedly the nine tails are and that the max that naruto can control is 3 tails and if he reaches 9 tails he will die so the awnser is when thay have the discusion jairiayahas a flash back i don't know what the epp. is though and the max ive seen naruto go is 6 tails
In episodes 166-169
Gaara doesn't know that Naruto is a Jinchuuriki yet. He only knows that Naruto has compassion for him and who he is. All other characters know he is a Jinchuuriki. We all anticipate the manga/anime that Gaara finds out Naruto is a fellow Jinchuuriki. Then and only then will Gaara see why Naruto cared so much for him, despite being from formal rivally villages.
If you're asking as a viewer of Naruto, in Naruto Shippuden Episode about 250, when he begins taming the Nine-Tails, he meets his mother and there you will get the full explanation, but, I can tell you that it is a variation of 'ya know'. - Bee