This is the right way to hold a ferret, by the scruff of the neck. My mother kept ferrets during World War II in England and used them to catch rabbits. We carried the ferrets in a sack to the rabbit warren and the ferrets never failed to return with our dinner. I was fond of these wriggly, thin beasts, but nobody had them as pets then. Nowadays they tuck themselves up into handmade sleeping bags and are as adored by their owners as cats and dogs.