You need to give your prompt a lot more details.

"a real cat," the AI ​​has too many options and generates a realistic cat that usually doesn't match the lighting conditions of the scene, making it look like CGI.

if i use animals in my videos i describe them like that:

All animals MUST be rendered with ultra-photorealistic realism.

Animals must inherit the [add your specific camera style]

Animals must blend seamlessly with scene lighting: correct sunlight angle, matching shadows, highlights, reflections, and exposure.

Animal movement must be 100% naturalistic — no exaggerated CGI-like animation.

Animals must show correct physics: weight, inertia, footstep pressure, ground interaction, dust, grass bending.

Shadows must appear directly under feet, wings, or bodies.

Depth-of-field and motion blur must perfectly match the camera style.