"Create a detailed 4k 3D model of a brown ox pulling a wooden cart loaded with hay. Include realistic textures for the ox’s fur, horns, and harness straps, as well as the worn wood of the cart and dry hay. Capture intricate details like the ox’s muscular build, chains, and wheels of the cart. Use balanced lighting and a neutral background to highlight all features, ensuring natural proportions and high-resolution realism."