Realistic Robotic Bull Animation

I need a realistic animation of a robotic bull for an in-world advertisement in a cyberpunk short film.

The bull should perform:
- Pawing the ground
- Swinging head (aggression)
- Running and charging
- interacting with a performer

I have an OBJ file ready for use but needs rigging. But open to original designs.

Ideal Skills and Experience:
- Expertise in realistic animation
- Proficiency with OBJ files
- Experience in animating complex mechanical movements
- Knowledge of cyberpunk aesthetics is a plus