Fed Ex overnight express, and just keep your mouth shut about what's in the box. Just make sure the inside of the box is insulated, and reinforced with styrofoam. Make sure it's NOT sealed air tight, but that it's taped up good. And make sure the animal is double bagged inside the box. And make sure you have a good lie to tell if they ask what's in the box,...unless you are shipping something dangerous! Then you'll need to get "certified".