As a child of 11, guitarist Kirk Hammett watched in horror as his pet dog Tippy was penetrated by the guy next door. That's just one of many jaw-dropping facts we learn about ultimate rock monsters METALLICA in the new issue of British magazine Q.

Hammett explains: "I went to my neighbor's. The guy took down his pants and started having sex with the dog! I didn't know whether to laugh or cry. When he got up, I just took the dog and left. She was still wagging her tail."

Other key revelations include frontman James Hetfield's jealousy over Hammett and drummer Lars Ulrich's massive consumption of cocaine. "I did not like being around them when they were on that stuff," says the singer. "I resented the closeness they had through their drug use."

What Hetfield and Ulrich did share, though, was their love of groupies.

"Those guys really went for it," recalls bassist Jason Newsted. "Lars would probably be the king as far as that crazy promiscuity goes. Blowjobs under the stage during the bass solo, that kind of stuff."