You should contact an expert in the field of skeletal collecting. There are other considerations such as what to clean them in to prevent fat from rendering out of the bone and staining your skeleton. I would do a search on google for animal skeletons for sale. This should lead you to a company that may have chemicals and instruction. Most are put together with wires and bolts/pins. You also might ask on the
www.taxidermy.net site.
grayghost