"Generate a highly detailed 3D model of a Gir cow, an Indian cattle breed known for its humped back, curved horns, and long, pendulous ears. The cow should have a robust build, a convex forehead, and a loose skin flap (dewlap) on its neck. Its coat should be pure white with a slight sheen. Ensure realistic muscle definition, expressive eyes, strong legs, and natural skin folds. Focus on symmetry, fine anatomical details, and subtle vein textures for lifelike accuracy."