Howling Dragon

(From 3.5e Draconomicon: The Book of Dragons - 2003):

Native to the windswept plane of Pandemonium, howling dragons are brilliant, scheming, and quite insane. 

A howling dragon is long and slender, with short, thin legs and narrow wings. Long spines form a frill behind its head, and twin clusters of similar spines sprout from its shoulders. Its scales are mottled purple and black, darkening as the dragon ages. Its yellow eyes are large and feral-looking, with tiny pupils. 

Howling dragons make their lairs in isolated caverns amid the twisting tunnels of their native plane. When they find their way to the Material Plane, they seek out similar terrain, and are thus usually encountered far underground. They roam widely in the territory surrounding their lair, exploring every narrow crevice and tunnel. 

Howling dragons feed on any creatures they can catch— living, undead, or even construct. They enjoy the sensation of biting into a still-moving morsel. 

Combat: Howling dragons attack with primal ferocity, battering their foes with every power at their disposal. They breathe as often as possible, switching between breath forms apparently at random. 

Young and older howling dragons’ natural weapons are treated as magic weapons for the purpose of overcoming damage reduction. 

Breath Weapon (Su): A howling dragon has two types of breath weapon, a cone of howling sound that deals sonic damage, or a cone of maddening wails. Creatures within the area of the maddening wails effect must succeed on a Fortitude save or take 1 point of Wisdom damage per age category of the dragon. On the plane of Pandemonium, where screaming winds restrict sound and hearing, both effects are limited to a 10- foot cone. 

Spell-Like Abilities: 3/day— Tasha’s hideous laughter, wind wall; 1/day—confusion, gust of wind, insanity, phantasmal killer, shatter, shout, sound burst, symbol of insanity, weird, whirlwind.