im not sure what a dog fancier is, maybe thats what someone who keeps dogs in this day and age is called,but it doesn't mean they know anything about dogs, i kept dogs all my life same as my father and his father before him and i can assure that any litter of pups born anywhere to any bitch of any species is born with certain traits either to be the most social or the most aggressive that breed can be,
these are traits that can be encouraged or neglected, all of which depend on learned behaviour, strong dogs and high drive dogs can all be kept with ease if you know the systems to work thes