Some believe that Kurt Cobain used rats to create the unique sound of Nirvana's music. While there is no concrete evidence to support this claim, it is interesting to note that in Nirvana's song "Scentless Apprentice," Cobain makes reference to "a rat's nest." It's possible that this lyric was inspired by his own experience with rodents. Whether or not Kurt Cobain actually used rats to create Nirvana's signature sound, it's clear that he was fascinated by them. In an interview with Rolling Stone magazine, Cobain once said that he liked rats because they were "scary and cute at the same time." He also had a pet rat named Nibbles, which he reportedly found in a gutter.