My current herd of does has been together for 4-5 years (speaking of those over 4). Yesterday, 5 of them began fighting - 2 of them hard enough that I separated them (they're both within weeks of delivery). When I say "fight", this is not the normal "get away from my dish" head swinging thing, this is prolonged (hours) of heavy butting, until both combatants are panting and bleeding. Hormones? This has been a weird breeding season - nearly all of the bred does have shown signs of "heat", and mounting behaviors, three and four months into their pregnancies. Today, one is flagging and screaming - she's due in about 3 weeks - definitely preggers. These goats NEVER fight like this. Nothing's changed in their routine. I don't have a herd queen. They're all queens. Drama queens.