Here is the model of the dragon over which I worked for so long. It has PBR shaders with all the necessary textures. The rig is also better than in my previous works, but still far from ideal. There are problems with wings that I can not solve at the moment.
MODEL WITH HIGH-RESOLUTION TEXTURES HERE: https://mega.nz/#!3hFHVCLZ!EYkclFxrHDqwXMleIBJr3ayR1eVMwKhDli9fo-bEP28