"Bark at the Moon" is a song by heavy metal vocalist Ozzy Osbourne. It was the first single released from his 1983 album of the same name. The music video produced for the song was Osbourne's first.
Lyrically, the song deals with a creature of some sort who once terrorized a town, was killed, and later mysteriously returned to once again wreak havoc upon the villagers. The music video, however, borrows heavily from Robert Louis Stevenson's classic Dr. Jekyll and Mr. Hyde story, depicting Osbourne as a "mad scientist" who ingests a substance in his laboratory which causes him to transform into the werewolf depicted on the Bark at the Moon album cover. Thought to be insane, he is subsequently committed to a mental institution.
The music video for the song was partially filmed at the Holloway Sanatorium, outside of London, England. In the early 1980s infancy of the music video medium, the video, which was the first Osbourne had made, was highly anticipated due to his outrageous image.