Here's my first skin for the Horse based on a Buckskin.Download: https://www.dropbox.com/s/w1qf6n73jc6wwuy/buckskin_v1.rar?dl=0
Comes with custom body, penis, hair and tail textures.
I suggest putting the hair and tail in Slot 1 so they use the neutral specular map.
I will update the eyes once that is worked out
Much thanks to jei3 for the skin manager and help!