Generate a high-fidelity 3D model of a Staffordshire Bull Terrier showing its robust, muscular build, broad head with a defined jawline, and smooth, short fur. Capture a confident, upright stance and detailed facial expression with subtle wrinkles. Use photorealistic materials and dynamic, studio-quality lighting to accentuate its powerful physique. [Parameters: high-poly, realistic shading, detailed geometry, controlled lighting].