Who is Fritzi from Collected Short Stories Volume Three and what is their importance? W._Somerset_Maugham English & Literature Fritzi | Collected Short Stories Volume Three

Fritzi appears in the story, The Traitor. He is a purebred dog, who belongs to Mr. and Mrs. Caypor. At the end of the story, Fritzi howls a long, emotional howl..... as if he understands that his master is dead.