Also "dogcock" or "dogscock." British journalese for an exclamation mark (!) due to the visual similarity. Considered vulgar but widely used within the industry.
Mentioned in Lynn Truss's book EATS, SHOOTS AND LEAVES.
"Can't we get along with just one dog's cock on that banner? Surely three is going over the top."
A full stop's not enough for that sentence - better add a dog's cock.