I'm pretty sure it was Mutts To You, I'm remembering the scene with the dog giving them directions, ending with the question-mark tail. I also remember recognizing them at first sight from the Looney Tune Hollywood Steps Out, which I had, I guess, already seen. I said to myself, Oh, Those Guys. I can't swear to the accuracy of the recollections, since after all I'm talking about 1959. And stay off my lawn, you punks.