Hi, I wrote that article. I used burlap feed bags purchased from a tractor supply store and jute twine. A bag for the head and neck, two for the torso, and one for each quarter. You just bunch up the burlap where you need a fold or joint. I did not make the legs full length. I hung the target off a clothesline setup. I used water softening bags to stuff the target, they do not have to be packed tight to stop arrows with target points. For realistic dimensions, call a taxidermist. You might be able to find the dimensions online or maybe the 3D target makers.