All non blunt force/ explosive damage is reduced to half. To add to that, with a primitive saddle, all damage is reduced so it takes about 30% damage. Always have it disguised as a rock around your base. It works better than a vault in several different situations. (For ALL smaller bases)
Rock elementals are extremely tough to kill or knockout. Over encumbering them inside or around your base and setting them to aggressive allows them to defend your base with their rock throw attack without being kited away by enemies.