Hi,
Well I have a girl so am a little biased of course.......I think a lot depends on the gender of other dogs in the house, I have had many dogs of both genders (only 1 Yorkie) and have always prefered females, especially after spaying! I think females may be assertive and sneeky, but not as agressive as males....and of course there is that lift the leg thing too.........Your breeder knows her bloodlines, and the general temperment of both genders in her line.......she will not steer you wrong.......consider her opinion as you make your decision.
