Depict a photorealistic grizzly bear standing on its hind legs in a dense forest, with rocks, plants, and moss adding depth to the scene. The bear's fur, with its rich browns, should be meticulously detailed. Utilize cinematic lighting, ultra-high resolution, extremely detailed textures, and photorealism. Render the image in 8k resolution, capturing every intricate detail and creating a true masterpiece. The bear's fierce eyes should reflect its power and dominance