It would seem that Hanna/Barbera "borrowed" the names Ruff and Reddy from this other dog and cat duo that appeared in Peter Porkchops comics. I don't know much of anything about who created these two but I doubt Joe Barbera had anything to do with them. I'm assuming they were created by Peter Porkchops creator Otto Feuer, the difference here is Ruff is the dog and Reddy the cat. This story is from Peter Porkchops #2 published in 1950. Anyone out there know more about these two?