Johnny, here is a program you might find helpful in making very large prints of pages.
PosteRazor
What it does is cut a large graphic up into many different pages and saves them as a pdf.
You could scan the parts of the tiger and leopard at a very high resolution then import the scans into your goto graphics program. You could then try enlarging the scans to get a very large graphic then save the large graphic and open it in PosteRazor to cut it up into multiple pages. You can select how much of an overlap you want between pages. There is a preview in the program showing how the graphic will be divided into the multiple pages. Sometimes you get a weird result like only a very small part showing on a page.