Dragon, Copper Juvenile (CR 8)

Medium Dragon (Earth)
Alignment: Always Chaotic Good
Initiative: +0; Senses: blindsense 60 ft., darkvision120 ft., low-light vision, and keen senses
Languages: Draconic

AC: 23 (+13 natural), touch 10, flat-footed 23
Hit Dice: 14d12+28 (122 hp)
Fort +11, Ref +9, Will +11
Speed: 40 ft., fly 150 ft. (poor)
Space: 5 ft./5 ft.
Base Attack +14; Grapple +17
Attack: 1 Bite +17, 2 claws +12, 2 wings +12 melee; Breath +17 ranged
Damage: 1 bite 1d8+3, 2 claws 1d6+1, 2 wings 1d4+1, Breath weapon 8d4 (19)
Special Attacks/Actions: Breath Weapon
Abilities: Str 17, Dex 10, Con 15, Int 14, Wis 15, Cha 14
Special Qualities: Acid immunity, spider climb, CL 3, *Can also cast cleric spells and those from the Chaos, Earth, and Trickery domains as arcane spells.
Feats: #Feats: 5
Skills: Skill points: 34
Advancement: 15-16 HD (Medium-size)
Climate/Terrain: Temperate and warm desert, hill, mountains, and underground
Organization: Solitary or clutch (2-5)
Treasure/Possessions: Double Standard

Source: Monster Manual

Breath Weapon (Su): A copper dragon has two types of breath weapon, a line of acid (8d4 damage Reflex save for half damage DC 19) or a cone of slow gas. Creatures within the must succeed at a Fortitude save (DC 19) or be slowed for 1d6 rounds plus 4 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.

Earth Subtype

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.