Hi, I am curious about something so thought I'd ask here.  I know that a singleton litter may result in some temperament tendencies for the pup but are there any tendencies toward certain types of temperament / behaviours of pups in say large litters, or litters where there is only one boy amongst a litter of girls or one girl in a litter of boys etc.?  I imagine there's little in the way of science based studies done on this but did wonder if the experienced breeders on this forum may have some theories they've developed over the years