hey what you want to try and do is not have any of the creases or lighting baked into the texture. You have a detailed texture on a simple mesh here. I would work on
-some displacement maps (sculpt detail in zbrush)
-paint a purely diffuse texture for the colour.
-you will need a map for the glossiness
-paint a spec map.
-To see the shader better its a good idea to render with no colour map. This way you can judge the sss and spec easier. so give this a go.
-for more details I would add a fur groom.