One of our miniature horses doesn't like any other animals. She has knocked over one of our turkeys and started ripping out her feathers. The horse has also brutally smashed one of our other turkeys. We are pretty sure the horse stomped the turkey's head and bit a big chunk out of her wing. The horse ripped the turkey's wing all the way to the bone and bruised the whole breast of our poor turkey. The turkey was put down. We seperated the poultry from the horses. Seveal weeks later we got pigs. One of the pigs got out of the pig pen and was in the horse pen and the horse was raising her front hooves and attempting to smash the pig. Luckily we got between the horse and pig before it was to late. She also tries to bite and kick our dog through the fence. Why does she do this? Is there anything we can do to make her stop?