I have found a DXF file of a lasercut 3D-Horse-Puzzle.
I have platet the pieces for 3d-printing.
stls are for 2mm pieces.
You can scale the pieces to your prefered sice with your printers software.
a zip file with sources is attached.
feel free to modify if needed.
sorry for my "german-english" ^^
I haven't build the horse yet.
I don't know how it looks, but i think its the horse i found on google.
The horse looks a little different as the horse on the picture
(2 pieces extra)