Three-Headed Cerberus in a Shadowy Cave

Ultra-realistic render of a colossal three-headed Cerberus in a damp, shadow-filled cave. Each head snarls with bared teeth, glossy black fur slick with moisture, and amber eyes glowing menacingly. The muscular body stands among jagged rocks and a shallow, reflective pool that mirrors the three heads. The cave walls are rough limestone with dripping stalactites, wisps of mist, and mossy patches. Flickering torchlight casts warm orange highlights and deep shadows on wet stones, while bioluminescent fungi along the walls emit a pale glow. Add fine details: wet fur strands, fangs glistening with saliva, steam from the warm breath, water droplets suspended in the air, distant echoes reverberating through the caverns. The mood is eerie and imposing, emphasizing scale and mythic menace in a photorealistic style.