In the 1970's Purina Cat Chow debuted a commercial to honor their Calendar Cats calendar. The commercial's jingle is a parody of Neil Sedaka's Calendar Girl and to get this calendar you sent away proof of purchase labels from Purina Cat Chow and the calendar was yours by mail. This calendar featured some of the nicest cats and looked very adorable. My mom would've loved this calendar because she LOVES cats and collects anything with cats. I don't know if Purina made this an annual promotion but the Purina Cat Chow Calendar Cats calendar was a special treat for any cat lovers