So I've been working on this basically all day. Started by the thought entering my head. About 12 hours later I get to see what I came up with. Did some heavy tweaking to that and got this. I've actually had an idea like this in my head for a long time. Puma, Jaguar, Panther, Tiger, and Leopard all on one wallpaper. Mac OS X Version 10.1, 10.2, 10.3, 10.4, and 10.5. I actually believe I managed to get the actually official X of each. Leopard and Tiger I know are the real deal. Same for Jaguar. Panther and Puma I'm not so sure on though.
Image size is 2560x1600. High resolution like almost everything else I've done.