Realistic AR Lion Mask Development

I'm developing a social platform with expressive video filters and need a high-quality AR lion mask. The lion should appear neutral when the user is calm, and animate into a fierce roar when the user's facial expression changes to angry. An optional audio trigger for roaring is also required.

Key Requirements:
- Highly realistic lion mask
- Neutral to fierce animation based on user expression
- Optional audio-triggered roar
- Compatible with both iOS and Android

Ideal Skills and Experience:
- Expertise in AR filter development
- Strong skills in visual design, face tracking, and animations
- Experience with highly realistic 3D models
- Familiarity with both iOS and Android platforms

Please provide:
- Full AR filter development capabilities
- Pricing and availability
- Portfolio or examples of similar work