twice is the norm 48hrs apart although I have had a litter born from One 5 min tie on day 11 ...good luck
By Tigge-with-spot Date 26.07.04 05:30 UTC
I have had 3 litters from my bitch using one mating. She has given me two litters of 13 and one of 12. My own personal view is unless they dont tie properly then one if sufficent. I do suspect though most people have two.