Dragon, Sapphire Wyrmling (CR 4)
AC: 18 (+1 size, +6 natural, +1 Dex), touch 12, flat-footed 17
Hit Dice: 8d12+8 (60 hp)
Fort +7, Ref +7, Will +7
Speed: 40 ft., fly 150 ft. (poor), burrow 15 ft., swim 10 ft.
Space: 5 ft./5 ft.
Base Attack +8; Grapple +5
Attack: 1 Bite +10, 2 claws +5, 2 wings +5 melee; Breath +10 ranged
Damage: 1 bite 1d6+1, 2 claws 1d4+0, Breath weapon 4d4 (15)
Special Attacks/Actions: Breath Weapon 4d4 (15)
Abilities: Str 13, Dex 12, Con 13, Int 12, Wis 13, Cha 12
Special Qualities: Electricity immunity, spider climb
Feats: #Feats: 3
Skills: Skill points: 14
Advancement: 9-10 HD (Small)
Climate/Terrain: Inner Planes, underground
Organization: Solitary or clutch (2-5)
Treasure/Possessions: Double Standard
Monster Manual II
Breath Weapon (Su): A sapphire dragon breathes a cone of nearly inaudible sonic energy. In addition to making a Reflex saving throw (DC 13) against sonic damage (2d4), each creature within the cone must succeed at a Will save (same DC) or become panicked for 1d4 rounds. Using a breath weapon is a standard action. Once a dragon breathes, it can't breathe again until 1d4 rounds later. A blast from a breath weapon always starts at the dragon's mouth and extends in a direction of the dragon's choice.
Dragons ignore the frightful presence of other dragons.
This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane of Earth. Earth creatures usually have burrow speeds, and most earth creatures can burrow through solid rock.