"The album marks Ozzy's change to a synth infused pop-metal sound, with both its "sonic production, and in Ozzy's imaging.

This is Osbourne's first album to feature guitarist Jake E. Lee and only studio album to feature drummer Tommy Aldridge.

Bark at the Moon is the only Ozzy Osbourne album on which the songwriting is credited entirely to Osbourne. However, guitarist Jake E. Lee maintains that he composed a significant amount of the album's music but was cheated out of his writing and publishing claims by Osbourne's wife and manager, Sharon. Lee claims that after he had composed the songs and completed recording his parts in the studio, he was presented with a contract which stated that he would have no claim to any writing or publishing relating to the album. The contract also stated that Lee could not mention this publicly. Lee claims he signed the contract because he had no legal representation and because Sharon threatened to fire him and have another guitarist re-record his parts if he refused.

Osbourne himself admitted several years later in the liner notes to The Ozzman Cometh that Lee had been involved in the album's writing to at least some degree, stating that the album's title track was in fact co-written by the guitarist. Osbourne's bassist at the time, Bob Daisley, has mirrored Lee's account of the album's production, stating that he co-wrote most of the music with Lee and wrote the vast majority of the lyrics. Daisley has stated that he accepted a buyout from Osbourne in exchange for a writing credit. Osbourne's former drummer Lee Kerslake, who also played with Daisley in Uriah Heep after leaving Osbourne's band, stated that Daisley had been hired by Sharon Osbourne to write the Bark at the Moon album for "$50–60,000 or whatever it is. He was offered the chance to write with Ozzy. Words, music – write the album."

- Discogs