A DIY label, or possibly a small independent. A single by Harlow-based Punk band Underdog, 'Life At 21' b/w 'Blue Water White Death', seems to have been Dog Rock's only release. It was issued in 1979, and the sides had their own discrete catalogue numbers - DR-01 and DR-02. The labels were black with white printing and featured what looks like a cartoon bulldog on a lead. Thanks to Robert Bowes for bringing Dog Rock to my attention.
Copyright 2016 Robert Lyons.