Thank you all for your help. Bought antibiotic and supplies to separate her from Atwoods, picked her up to move her and her comb and face were purple. Cuddled her for a minute and she died in my arms. Our dog is big, I'm sure she tried to play and did some internal damage.
I'm sorry for your loss. We had a weak black Australorp, that died about a week into having her. Not sure really what it was. They were all playing, and doing the normal chick stuff, and when I checked on them a couple of hours later, she was dead. I removed her, and all of the others, seem to be fine. No issues, at all, now two weeks later.
From the moment we brought our chicks home, our beagle, (who is normally a typical, "couldn't care less" hound dog, who just lays around like hounds do) has been very possessive of the chicks. We have been babysitting my sister's Golden Retreiver, who is a dominant "Alpha" female. Our beagle is normally passive, to the Golden, but, NOT around the chicks. Then, he becomes super dog, and protects them. The Golden is very interested in them, and when we tried to let her, and our other dogs, check out the chicks, up close (we were holding the chicks) both she, and the beagle, tried to bite them. Not aggressively, mind you. But certainly advanced, with an open mouth, and tried to nip, or nibble at the chicks. So, we have kept them all segregated since. But, our plan is to "Free-Range" them, as they grow older, and I'm not sure how we get them to not chase, and/or try to kill, the chickens. Suggestions would be met with gratitude.
Since I know that different breeds have different instincts, I figure I ought to list our 6 dogs breeds.
Inside, house dogs are:
#1-7 year old purebred Miniature Schnauzer female, spayed about a year ago. She is the alpha, of all of our dogs. Definitely rules the roost, so to speak.
#2-7 year old purebred Toy Poodle female, spayed about 4 years ago. She is mostly docile, but likes to pretend she is relevant in the pack, as a protector.
Outside dogs are:
#3-7 year old Catahoula Cur male, mixed breed. fixed at about 5-6 months of age. Good watchdog. Barks at stuff that needs barking. Mostly uninterested in the brooding chicks, but that is likely to change, as the chicks get put in the coop, and let out to forage.
#4-9 year old Beagle, purebred, fixed at 5-6 months. Usually not aggressive at all, but his actions around the chicks, tell me, that he thinks they are HIS food, live on the hoof.
#5-1 year old Boxer female, spayed at 11 months. Very playful, but mostly uninterested in the chicks in the brooder. As much as she likes to play, And as big and strong as she is, I believe she will want to play too hard with the chickens, and potentially damage them.
I am open to all good advice. Our plan is to build a dog run, around the coop and pen, for the beagle to stay in, and keep any foxes, coons, possums and other chicken aggressive critters away. His nose leads him to run off for weeks at a time, (twice now) and as much as we would rather he not be "caged", we love him too much, to have that happen a third time. The Catahoula, and Boxer, are to be the free roaming watchdogs, as their breed, natural instincts, and toughness, should ward off, most of the critters, leaving the beagle's job, to be pretty simple. We have LOTS of room, and LOVE our dogs. We are open to the possibility, of getting another dog for our "pack", and at this point are leaning towards a male GP, if we choose to take on another dog.