After following this debate, I posted a thumbnail of a pig's nipple with the title 'A Beautiful Pair of Beasts'. when you see click to see the whole image, it's a piglet suckling from the mum (with a spare nipple in the foreground which is where the thumb comes from). To date, it has just under 200 viewings. The sad thing is - it is clear from the thumbnail that it is an animal's nipple!! Oh well it takes all sorts.