No, that is not natural curl. This palomino quarter horse had its mane braided. The curls were the result.
I liked the pattern of long curls against the shorter coat of hair. Depth of field is shallow at the focal length and focus distance, so I aligned the plane of focus against the horse's neck as best I could for this shot.
Camera and Lens Settings
200mm f/8.0 1/250s
5760 x 3840px