Rock n' Roll is a dangerous animal. Some may say it's "savage". Here's a list of the most noteworthy Rock N' Roll feuds.

7. Tommy Lee vs Kid Rock (Over Pam Anderson)

6. Nirvana vs. Pearl Jam (Over Kurt Cobain making fun of Pearl Jam as being careerist arena rockers. Dave Grohl dismissed it: “That sort of [expletive] just makes great copy.”)

5. Liam Gallagher vs. Noel Gallagher (No explanation needed)

4. Roger Waters vs. David Gilmour (Pink Floyd)

3. Scott Weiland vs. Anyone he’s ever been in a band with

2. Dave Grohl vs. Courtney Love (No explanation needed)

1. Metallica vs. Megadeth (Dave Mustaine’s bitterness over having quit Metallica)