Jim Henson was hired to do once again, another series of commercials and he created both Rowlf the Dog and Baskerville the Hound for this series of Canadian Purina Dog Chow ads, which aired from 1962 to 1963. Seven spots were produced -- three 60-second ads, and four product IDs.
According to Jim Henson: The Biography, "Bernie Brillstein later recalled - though he was never certain if the offer came from Purina or another client - that Jim was offered $100,000 for the company to own Rowlf outright. Brillstein nearly lept at the offer, but Jim immediately squashed the deal. "Bernie", warned Jim, "never sell anything I own.""
Four commercials were included as bonus features in The Muppet Show: Season Three DVD set.