In over-all proportions and in some details of internal structure the chimpanzee-for example-is actually quite similar to man, but in certain aspects of spinal structure the bear seems a better fit. Bears had the added advantage of being cheaper and more plentiful than chimpanzees. Hogs, of course, are the most plentiful of all, at least among the large animals, and in addition have their points of resemblance to the human body. They are also the most edible, but allegations are only in jest that they are used by the Aeromedical Field Laboratory because they make good barbecue material. If sacrificed during or after a test, hogs are upon occasion presented to different units at Holloman, including the Aeromedical Field Laboratory itself, for use in group picnics, but this is only incidental to their primary research function.29