You can attach Hair curves to Fur Descriptions and then use the curves to style the Fur or to have the Fur react to dynamic forces. The workflow involves creating a hair system (Hair > Create Hair > ), which has many setup options, before adding movement to fur using hair curves. Consider reading up on some topics in the Hair and Dynamics Curve guide, including:
To create a hair system to be used with fur
It is the NURBS curves that will attract the Fur. You can mix Hair and Fur together by selecting Paint Effects and NURBS curves output, and using the curves to control the fur. This might be useful if you wanted an overall base coat of thick fur which has the same dynamics as a few clumps of longer hair.
The curves appear on the selected surface, points or faces and a hairSystem node is created.