I think the mare will have to be put down, she is literally shredded and it sounds as if her back fetlock/leg might be broken. I am so upset for her, nobody home to help her since hubby works at night 40 miles away. I am six hours away so can't help.
This mare has only one eye, I am thinking the dogs caught her by surprise and got her down and she could not get up.
My daughter was gone this afternoon, and only just got home to find her horse. Please say prayers that she will not have to be put down.