My 4y/o amber, is the first mare i've ever owned, I've always had geldings. I've heard from many friends that their mares become total witches when they're in heat. Well I've had amber for about 3 months now and she's always been decently behaved when I ride her even if theres a week or 2 inbetween rides due to weather and such since we don't have an indoor arena. Any way I rode her yesterday for the first time in like 2 weeks and she was soooo bad, she kept spooking (something she never does) spinning, and trying to take off. And everytime my friend kim got to close to amber with her gelding bandit, amber would turn her butt at him and back up trying to kick him, she caught kim in the leg once. I have never seen her act like this and she's usually great around other horses. Could she be in heat?? Or just in a b*tchy mood??