This is a little Blender Material-Example to showcase a potential Workflow for a fur material to use in a Game-Engine
A fur brush "Floof" utilizes a stretched noise texture and with a rake configuration. This allows to draw the flow of the fur on a Mesh.
The resulting Black/White Texture is used to generate the Normal-Map and blend between Color-Masks.
There is also a PBRBaker node to combine different Values together, like Metallic, roughness and specular.
This file is only an example how to make a Fur-Texture in blender, you can use this file however you want as learning resource.