WowWe have 3 dogs currently aged 4, 5, and 8. We have 2 specific nights set aside just for them. If we're talking about the kind of knotting to breed then its anywhere between 2 to 5 times each session between the 3 of them. I've had days alone by myself where its been around 7 to 10 times over like 14 hours.
When I was 20 I once had the opportunity to be passed around amongst 5 male dogs on my parents farm for 4 days straight. My record during that long weekend is 17 times in one day. My body was covered in scratches and bruises, and my pussy was swollen for days. I was walking a bit stiff for about a week after. It's one of my all time best sexual experiences lol.