Here are 2 pages from an origin story for an early-mid 1940s "Super Dog" anthropomorphic comedic superhero, clearly drawn by Ellis "Holly" Chambers, that, based on the style, appears to most likely have been drawn in 1944 or 1945:
As we can see on both pages, the border lines of the panels have the jagged edged electronics resister symbol, that Robert Farrell's "Kiddie Kapers" series used (which is the only funny animal series that I know of which used that, on which Chambers worked). And there seems to have been enough finished artwork for at least one additional issue of that series after it was shut down (which was issued some years later in a reprint series), as well as 4 additional stories which could have filled most of another book. Perhaps "Kiddie Kapers" had 2 additional unpublished books worth of finished stories waiting to be printed, and this "Super Dog" story was the final piece of that second book?
Chambers' other main freelance client during those 2 years was Fox Features. But Fox had their own other super canine, "Marvel Mutt" (Ribtickler Giant (1945), and never used the jagged edged panels. Chambers also drew for Charlton, Timely and MLJ.
There is possible clue to the publisher of the series containing "Super Dog", in the fact that on Page 2, Super Dog is reading a "Nutty Comics" book. Fawcett's lone issue of a "Nutty Comics" title was issued in 1946, and the first issue of Harvey's "Nutty Comics" was published in mid 1945 (so the latter is more likely, but both are possible. I don't recall him having worked for either Harvey or Fawcett. It is also possible that the author's use of the name "Nutty Comics" was random, only indicative of a comedy genre comic book, as there were no other US comic books using that title between 1943 and 1946, of which I am aware.
I hope some of you golden Age comics experts will know of a book in which this story was printed, and will enlighten me with details about it.
Thanks for any help.