Please help me! A couple hours ago 3 dogs (no, i dont know whos they are or where they came from.) Attacked one of my chickens. They were out in my back yard, one cackled, i went out to see what the fuss was and 3 dogs were running around the yard. We ran them off and did a head count. I have 8 hens. Only 7 showed themselves. I went looking for Old Bitch but couldn't find her. And she didn't come when i called her. About an hour after the event she showed back up. I looked her over and don't see any wounds, but she seems very tired and is pooping a milky water substance. Shes drinking water, but ignoring feed and scratch. I have put her back in the run with the others because she seems happier there. Should i be doing something for her or just let her rest? Please advise, this is my first time I've had chickens. Aquired them about 10 weeks ago. They were 4-5 months old when i got them.