The Old English Sheepdog is the brand mascot for Dulux paint. The dog was first introduced in Australian advertising campaigns in the 1960s. Since then they have been a constant and highly popular feature of Dulux television and print adverts in both Australia and the UK. So much so, that most uninformed people in those markets refer to the breed as a 'Dulux dog' rather than a Sheepdog.

Over the years, different dogs have appeared in the adverts. However, they all look very similar, partially as a result of most of them being selected from a closely related line of pedigree dogs. The first Dulux dog was Shepton Dash, who held the role for eight years. His successor, Fernville Lord Digby, was the most famous Dulux dog and also made his owner, Cynthia Harrison, famous. When filming commercials, Digby was treated like a star, being driven to the studio in a chauffeur driven car. Barbara Woodhouse was employed to train Digby and his three stunt doubles, who were used whenever specific tricks or actions needed to be filmed.

Apart from Dash, all the Dulux dogs have been breed champions, and five of them have won 'Best of Show' prizes.