Dragon, Copper Very Young (CR 4)

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

AC: 18 (+1 size, +7 natural), touch 11, flat-footed 18
Hit Dice: 8d12+8 (60 hp)
Fort +7, Ref +6, Will +7
Speed: 40 ft., fly 100 ft. (average)
Space: 5 ft./5 ft.
Base Attack +8; Grapple +5
Attack: 1 Bite +10, 2 claws +5 melee; Breath +10 ranged
Damage: 1 bite 1d6+1, 2 claws 1d4+0, Breath weapon 4d4 (15)
Special Attacks/Actions: Breath Weapon
Abilities: Str 13, Dex 10, Con 13, Int 12, Wis 13, Cha 12
Special Qualities: Acid immunity, spider climb
Feats: #Feats: 3
Skills: Skill points: 14
Advancement: 9-10 HD (Small)
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 (4d4 damage Reflex save for half damage DC 15) or a cone of slow gas. Creatures within the must succeed at a Fortitude save (DC 15) or be slowed for 1d6 rounds plus 2 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.