(SOUNDBITE OF METALLICA SONG, "DON'T TREAD ON ME")

DAVID GREENE, HOST:

Good morning. I'm David Greene. Sorry to wake you up like this, but a Canadian woman turned to this Metallica song in a time of need. Dee Gallant was walking her dog and realized she was being stalked.

(SOUNDBITE OF ARCHIVED RECORDING)

DEE GALLANT: Get out of here - bad kitty.

GREENE: Yeah, it was a cougar staring her down. So she pulled out her phone, prayed to the gods of metal and pressed play. The cougar; not a fan - more of a jazz cat. It ran off. And Gallant says, the band saved my life. Transcript provided by NPR, Copyright NPR.