The cartoon featured a large mangy dog named Precious Pupp and his owner Granny Sweet. Granny was a kindly woman with a passion for motorcycles, completely oblivious to the fact that her beloved, affectionate pet was something of a neighborhood terror. He had a habit of slipping behind a victim quietly---sometimes in defense of their home, sometimes just for the fun of it---and jolting him with a ferocious series of barks . . . but never where or when Granny could catch him in the act. Unlike many cartoon animals, Precious didn't speak. His usual vocalism was an asthmatic-sounding, "wheezing" laugh used even more famously by Muttley, a Hanna-Barbera character introduced three years later; he usually outsmarted his enemies, most notably Bruiser, the neighborhood bulldog, but he usually outsmarted his oblivious owner, too.