Hair of the Dog is the sixth studio album by the Scottish hard rock band Nazareth, released in 1975. The album was recorded at Escape Studios, Kent, United Kingdom with additional recording and mixing at AIR Studios, London, and is the band's biggest selling album, having sold two million copies worldwide.
It was Nazareth's first big hit album (aside from the minor success of Razamanaz), including classics such as the title track, "Love Hurts" (on the US version, but not the Canadian/European, it replaced the original "Guilty"), "Beggars Day" and "Please Don't Judas Me".
The album title is often considered to be a shortened form of the phrase describing a folk hangover cure, "the hair of the dog that bit you". However, according to Dan McCafferty, the title is a play on "heir of the dog", i.e. a "son of a bitch". This was the title the band had intended for the album, but the label did not approve and had the name changed, although nearly a thousand album covers were printed. The original "Heir of the Dog" album covers are very rare and worth a small fortune to collectors. The title track is sometimes mistakenly called "Son Of A Bitch" because of its hook ("now you're messin' with a son of a bitch").
The remastered compact disc, first released in the mid-1990s, features bonus tracks.