I have a female in heat now that I want to breed. The last two breedings have taken place on day 13 and day 11 of her cycle. I had a vaginal smear done by the vet Saturday and she said the dam was in late pro-estrous and figured it would be 2-3 days before estrous. Today is day 15 and my male is still not entirely interested. He sniffs around but will not try to mount her. Long explanation- question is have many of you experienced a similar variation in the time to estrous. I really don't want to miss this cycle.