Create a realistic 3D Great Dane model with an extremely tall, elegant, and muscular build, long legs, deep chest, and narrow waist. The dog should have a noble head shape, long muzzle, expressive eyes, and naturally folded ears. The coat should be very short and smooth, clearly revealing accurate muscle definition and skeletal structure beneath the skin. Use high-resolution PBR textures with subtle color variation (fawn, brindle, black, or harlequin) and realistic skin shading. The model should be properly scaled, posed neutrally, and optimized for animation in cinematic or AAA game environments.