Dennis the Menace and Gnasher.

Dennis the Menace and Gnasher (known globally as Dennis and Gnasher) is a comic strip in the children's comic The Beano, published by DC Thomson, of Dundee in Scotland. The comic stars a boy named Dennis the Menace and his dog, an "Abyssinian wire-haired tripe hound" named Gnasher. The strip first appeared in issue 452 (dated 17 March 1951) and on sale from 12 March 1951.