What if dogs could really be interviewed? (1974)

 In 1974, Purina had made some adjustments to their nearly 50 year old Dog Chow (yes, it'll turn 100 before the end of the decade), and in a clever ad, a "Man on The Street" interviewer (George Fenneman, ex-Dragnet, You Bet Your Life) talks to some dogs (not sure about the voice actors, although I suspect some of the usual suspects of the period, like Daws Butler or Dayton Allen or even Mel Blanc or Paul Frees).