In Season 1 episode 5, The Wolf and the Lion, of Game of Thrones, Sandor Clegane (the Hound) saves Ser Loras Tyrell from Gregor Clegane (the Mountain), when the Mountain attacks the Ser Loras and fights him. However I am confused why he would do that, due to the below reasons:
- The Hound has no obligation to save Loras as he is neither his lord nor related to Joffrey.
- Even if he does it out of hatred towards his brother the Mountain, then also killing Loras would have brought the wrath of Tyrell house on the Mountain. I believe even Tywin would not have saved the Mountain from that.
- Loras was a fancied Knight kind of person, whom the Hound doesn't like.