Dragon, Brass Young (CR 5)

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

AC: 19 (+9 natural), touch 10, flat-footed 19
Hit Dice: 10d12+20 (85 hp)
Fort +9, Ref +7, Will +8
Speed: 60 ft., fly 200 ft.(poor),burrow 30 ft.
Space: 5 ft./5 ft.
Base Attack +10; Grapple +12
Attack: 1 Bite +12, 2 claws +7, 2 wings +7 melee; Breath +12 ranged
Damage: 1 bite 1d8+2, 2 claws 1d6+1, 2 wings 1d4+1, Breath weapon 3d6 (17)
Special Attacks/Actions: Breath weapon
Abilities: Str 15, Dex 10, Con 15, Int 12, Wis 13, Cha 12
Special Qualities: Fire subtype, speak with animals, CL 1, Can also cast cleric spells and those from the Chaos and Knowledge Domains as arcane spells
Feats: #Feats: 4
Skills: Skill points: 16
Advancement: 11-12 HD (Medium- size)
Climate/Terrain: Temperate and warm desert, plains, and underground
Organization: Solitary or clutch (2-5)
Treasure/Possessions: Double Standard

Source: Monster Manual

Breath Weapon (Su): A brass dragon has two types of breath weapon, a line of fire (3d6 damage Reflex save for half damage DC 17) or a cone of sleep. Creatures within the cone must succeed at a Will save (DC 17) or fall asleep, regardless of HD, for 1d6 rounds plus 3 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.

Fire Subtype (Ex): Fire immunity, double damage from cold except on a successful save.

Fire Subtype

A creature with the fire subtype has immunity to fire. It has vulnerability to cold, which means it takes half again as much (+50%) damage as normal from cold, regardless of whether a saving throw is allowed, or if the save is a success or failure.