i believe that Naruto has whiskers because he was born under the 9 tails Jinchuuriki. Thats why Kushina did not have whiskers, she was not born under a jinchuuriki. I think Shikaku and Ginkaku gained the whiskers while feeding on the Kyuubis insides for 2 weeks.
This is my first post. Go easy plz.
This is my first post. Go easy plz.