In the 60s I had a first copy of Sgt Peppers bought in Buenos Aires, Argentina, and I don´t remember no dog (well, I was a child, but I remember) Then I bought another copy in France, in the 70s, no dog... third copy seen a couple of years later in New York, no dog... Fourth vinyl bought in Spain, toujours no dog... Besides, I never heard about that, but if you have some more info, it´s interesting. And it´s sure a record that sold a lot!