Dragon, Iron Juvenile (CR 10)
AC: 16 (-1 size, +7 natural) touch 9, flat-footed 16
Hit Dice: 16d12+64 (168 hp)
Fort +14, Ref +10, Will +14
Speed: 40 ft., burrow 40 ft., fly 150 ft. (poor)
Space: 10 ft./10 ft.
Base Attack +16; Grapple +30
Attack: 1 bite +25, 2 claws +20, 2 wings +20, 1 tail slap +20
Damage: 1 bite 2d6+10, 2 claws 1d8+5, 2 wings 1d6, 1 tail slap 1d8
Special Attacks/Actions: Breath weapon 8d10 (22)
Abilities: Str 31, Dex 10, Con 19, Int 18, Wis 19, Cha 18
Special Qualities: Alternate form, immunity to fire, vulnerability to cold, Heat metal, Stone shape, CL 3rd
Feats: #Feats: 5
Class Skills: Disguise, Gather Information, Skill points: 70, and and Jump
Advancement: 17-18 HD
Climate/Terrain: Temperate hills and mountains
Organization: Solitary (1 dragon, any age), clutch (1d4+1 wyrmlings, very young, young, juvenile, or young adults), family (pair of mature adults and 1d4+1 offspring)
Treasure/Possessions: Triple Standard
Alternate Form (Su): An iron dragon can assume any animal or humanoid form of Medium size or smaller as a standard action three times per day. The dragon can remain in its animal or humanoid form until it chooses to assume a new one or return to its natural form.
Metalsense (Ex): all ferrous dragons can sense the location and amount of any non-precious metal (precious metals include adamantine, copper, gold, mithral, platinum, and silver) within a distance of 30 feet x the dragon's age category. This makes it nearly impossible to sneak on a ferrous dragon when wearing armor or wielding weapons made of iron or other nonprecious metals. Like blindsense, opponents the dragon can't actually see still have total concealment against the dragon.
Breath Weapon (Su): An iron dragon has two types of breath weapon, a cone of superheated sparks (dealing half electricity and half fire damage), and a cone of sleep gas. Creatures within a cone of sleep gas must succeed on a Will save or fall asleep, regardless of HD, for 1d6 rounds plus 1 round per age category of the dragon.
Spell-like Abilities: 3/day - heat metal.
Skills: Disguise, Gather Information, and Jump are considered class skills for iron dragons.
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.