Answer:
Um, you need to say it detail, like who is the protagonist? The dog? The man? Is that an old man? Where is he live? Which dynasty are you writing? Or at least what is it mainly about?
Personally, base on your question, I think it is slice of life, love, marriage conflict,, kindness, oneshot (if your story is short), or may be drama? (if it is sad)
Hope it helps (*´∀`*)