[bjh]

I find it hard to believe that is nothing but coincidental if male pups are coming from just the right horn. It is an interesting subject though.

It is the male that determines the sex so I would figure it is just a matter of which sperm gets there first, male or female. It is my understanding that after the bitch is bred the female sperm live longer than the male sperm do. I have noticed that if I breed a bitch early in her heat cycle that she tends to have more female pups. I thought perhaps because by the time the bitches eggs have dropped that only the female sperm are still alive. Of course that is just my theory and it does not always work. It could be just coincidental also. I have had litters of all males and litters of all females and many mixed sex litters.

Most of the time when I breed a female I try to breed her around the 9th day of her heat cycle if she will accept a male. Then I will skip two or three days before breeding her again. It just seems like I get more female pups by doing it that way.