Pif le chien is a comic strip character created in 1948 for the daily L'Humanité by José Cabrero Arnal. He had as his predecessor the character of Top by the same author, who was later identified as Pif's father. It is an anthropomorphic dog that forms an antagonistic/protagonist relationship with Hercules the cat. After L'Humanité, Pif became the star series of the children's newspaper Vaillant. In 1969, Vaillant was replaced by Pif Gadget. L'Humanité and the weekly L'Humanité Dimanche also published short stories of three or four boxes in each issue.
Source : Wikipedia