>>More Peter Sellers:
>>-Does your dog bite?
>>-No.
>>-Aaaarghhh!!!
>>-That is not my dog.
>
>Seems to me I first encountered this in Bennett Cerf's Book of Laughs, which was one of my favorites as a kid. I can still picture the drawings.
>

It may have been lifted from somewhere else but it was definitely in one of the Pink Panther movies.