Sir Arthur Conan Doyle / "The Adventure of the Creeping Man" ]
Sir Arthur Conan Doyle (1859 - 1930) is the English writer and physician best known as the creator of Sherlock Holmes, though he also produced a large number of other literary works: ghost stories, science fiction, plays, poems, and historical novels.
There is a dog featured in this story, but it's a wolfhound; at one point it breaks free from its restraint and attacks its owner, and we get the story's only (indirect) reference to Newfoundlands:
And then in a moment it happened! It was not the chain that broke, but it was the collar that slipped, for it had been made for a thick-necked Newfoundland.