Yes, but I do not understand what you mean by "reprint horses' dds".
Yes I have most of the horse DDS texture files, but it is hard to do any serious editing especially near the edges without be able to paint directly on the 3D model. It is what helped me fix seams in my human model skin DDS. I put the texture on the body model and paint directly on it in Photoshop CC 3D mode.
I don't know how else to paint near seams =(
I already have been working on the Conqueror package "black horse". It was not as detailed or muscular as other horses and was more gray then black.
I want to ad more details, like actual fur look. This would be much easier with the 3D model, otherwise there wont be any fur near the seams and it will look odd.