My girl does it and there was only 1 dog in the litter of 5. That said, he was about the size of all the girls put together, and probably had enough testosterone for most of the dogs in the neighbourhood grin
My girl is definitely a tomboy. I wonder if she was next to him before they were born. So cute
A bitch's uterus is "Y" shaped, and the puppy foetuses implant along the horns of the "Y". Maybe she was the first to implant, right t the top of one horn, then her great bruiser of a brother got himself settled next to her, so she was splashed liberally with sloppily applied testosterone.
(Just going off my own son when he was a teenager, and the amount of Lynx Africa he seemed to manage to throw all over himself, his clothes, his bed, his walls . . . )
Another useless fact and not even about dogs. Apparently, twins are more likely to be left handed because it's a testosterone based trait and they are exposed to each others in the womb.(
Is this just identical male twins, sharing an amniotic sac? Or does it effect fraternal male and fraternal mixed-sex twins, too?
This is the sort of stuff that wins pub quizzes.
One day, we might be able to open pubs again, and have a quiz . . .
AND I MIGHT WIN IT WITH ALL THE STUFF I'M LEARNING HERE!
MWHAHAHAHAHAHAHA! [GRIN]