Model has simple rigging made in Blender 2.81 and used for render posing. Model has 24950 tris and will work fine in any game engine. Model made out of 7 meshes which are body, two eyes, upper/lower jaw, tongue and tail. Model works fine with subdivision level. Model has 3 uv sets - mouth area (1k), body(4k) and eyes(512).
Substance painter file was damaged, so it's only type of textures which is available (check the pictures)