Realistic Gorilla Animation

I'm seeking a skilled animator to create a realistic animation of a gorilla walking straight for 15-20 seconds. The animation will be used in a film/video project, and it should feature a cityscape background.

Requirements:
- Realistic animation style
- Gorilla walking animation, 15-20 seconds
- Cityscape background

Ideal Skills:
- Expertise in realistic animal animation
- Proficiency in animation software
- Experience with urban environments as backgrounds