Hi everyone, I have a mare that is 307 days. She lost her first foal at about 6 months. She is the sweetest natured mare normally . Yesterday she was acting so strange. She is paddocked next door to our stallion, has been for a long time, no dramas. She is in a paddock with 4 other mares all in foal. Yesterday our stallion served one of our mares and I turned her out with the in foal mares (she has been paddocked with them off and on for several months with absolutely no issues) Our in foal mare chased her and then started mounting her like she was serving her even biting her neck like a stallion. It went on for ages, I was trying to catch them so I could seperate them and i couldnt catch them, it took me nearly an hour to catch them and the whole time the in foal mare would chase the other mare then mount her. This is not something she has ever done before, we have owned her for several years. She was fired up, galloping around. When i seperated them I put the other mare in another paddock and the in foal mare spent hours pacing up and down the fence line. I have checked the mare and she is showing signs of getting close, her back end is soft and stretched, very little if any resistance in her tail but she has no bag or signs of milk. Does anybody know whats wrong with her. Is it a surge of hormones meaning she is close to foaling? Shes settled a lot today but still grazing right by the fence line where the mare and stallion is. Shes bright eyed and very happy but just undergone an enormous personality change. Would love peoples thoughts. Shes not trying to mount any of the mares in her paddock. She is also showing strange behaviour towards another mare that has come into season and is paddocked near her.