Sorry about that. I mixed up the word order with the "based on"thing and I forgot that it’s not common knowledge that Cosmopolitan used to be a literary magazine until the mid-60’s. As far as I can tell the story was published in the Jan-Jun(not sure if that’s one issue or a compilation) issue of Hearst’s international and Cosmopolitan magazine, V.118, in 1945. To find it on google books search for “happy Dan” (in quotes) dog(not in quotes. So search for “happy Dan” dog.