This vintage advertisement is from a campaign for Kit-E-Kat cat food by George Patterson Advertising that ran from the late 1960s into the 1970s.

The campaign sold the idea that Kit-E-Kat could fuel even lazy old cats with 'kitten power' and make them feel 'twice the cat'. The images of a yawning older cat are juxtaposed with those of a playful little kitten jumping all over furniture and playing inside a brown paper bag.

The key message of the ad is reinforced by the song playing in the background - 'You Make Me Feel So Young', made famous in the late 1940s by American crooner Frank Sinatra.

The ad also intersperses shots of cattle and a school of fish to drive home the nutritional value of the pet food and promote it as the only food your cat will need to be happy, healthy and strong.