Photorealistic Animal Addition in Photoshop

I'm seeking an excellent Photoshop expert to work on a single image. The primary requirement is to introduce animals into the picture. The animals must be seamlessly integrated into the scene, with a high level of realism, making them look like they were there from the start.

Key Tasks:
- Introduce photorealistic animals into the image
- Ensure animals are proportionate and appropriately shadowed

Ideal Skills:
- Proficiency in Photoshop and advanced photo editing techniques
- Experience in photorealistic object insertion
- Attention to detail and ability to match lighting and shadows

Please provide examples of similar work in your bid.