Updated.
Feats: 3
Ogre has Toughness, Weapon Focus (greatclub)
Hill giant has Cleave, Improved Bull Rush, Power Attack, Improved Sunder, Weapon Focus (greatclub)
CR 5 (smack dab in the middle of ogre and hill giant, like its HD)?
Most horags will be found with either ogres or hill giants-their immediate relatives. Those that live away from their blood kin tend to be loners, and prefer medium-sized open caves in hilly areas. These caves will often be partially blocked by loose rubble and large stones, as the horag will take pains to conceal and protect its lair. As there are so few of their kind, most horags end up mating with ogres or hill giants, the offspring being a somewhat odd-looking but essentially normal member of the other parent's race.
Hill Giant Organization: Solitary, gang (2–5), band (6–9 plus 35% noncombatants), hunting/raiding party (6–9 plus 2–4 dire wolves), or tribe (21–30 plus 35% noncombatants plus 12–30 dire wolves, 2–4 ogres, and 12–22 orcs)
Ogre Organization: Solitary, pair, gang (3–4), or band (5–8)
So...
Organization: Solitary, mated pair (horag and ogre or hill giant mate), gang (horag plus 3–4 ogres or 2-5 hill giants), band (horag plus 5–8 ogres or 6–9 hill giants plus 35%, hunting/raiding party (horag plus 6–9 hill giants plus 2–4 dire wolves), or tribe (horag plus 21–30 hill giants plus 35% noncombatants plus 12–30 dire wolves, 2–4 ogres, and 12–22 orcs)noncombatants)?