Hi
I have 10 CPDs, uncertain of exact numbers but Im guessing I have 4 males and 6 females (they’re so fast I can’t keep count)
But I see this behaviour all the time. They all constantly chase each other, and I have seen them do the circle thing you noticed, but I’ve seen males do it to males and females and females do it to other females too!
I don’t know if it’s a territory thing, but no one is harmed so it’s really just cute:D