'Morty the Dog'.
Steve Willis is an American cartoonist from the Pacific Northwest, who was prominently part of the new wave of small press publications of the 1980s. Willis sold his wacky, surreal and playful photocopied mini comics like 'Cranium Frenzy' by mail-order. He also contributed his work to local semi-regular papers like the Seattle Star. Willis' main character was 'Morty the Dog', whose adventures he drew on the backs of retired filing cards or random pieces of paper.
Comic strip from Seattle Star.