I am sorry I dont seem to understand the comment on female sperm. As far as I know females have a stored capacity of eggs that are released during ovulation, for what ever period that is that it takes place in dogs. Males on the other hand produce the sperm, which gets implanted into the females egg from which was released from her ovary. Then fertilization takes place. I am just curious about female sperm... I did not know that female dogs had or produced that???