I created a fully customizable system for a yet-to-release mobile/nft project. This cat model is using shape keys for the major body distortions and also supports swapping out parts like the ears, legs, tail and eyes… each with their own deformation support.
The full system blends the body parts together for a smooth surface and includes support for clothing and props as well as textures and effects, and you can create thousands of variations from one base cat. Those three cats are the same model. The lion is a separate "race" with unique features and customization