I went to feed my rats this morning, and all was good until I got to my last female, she has 6 babies that are almost weaned with her. I looked in her tub and I saw her laying on her back with her mouth open with her babies huddled around her in the corner of the tub. I was horrified, certain she was dead. I took the lid off the tub and took her out, and she started to move. I put her back down. She was INSANELY skinny, and her spine appears to be abnormally curved. I poured a pile of food from her dish infront of her face but she didn't eat any. She is tan coloured with red eyes. Her eyes are NOT red anymore, they are orange-brown now. I have no idea what happened, I haven't been neglecting my rats, she was absolutely fine yesterday. I suspect that maybe her pups have stolen all the food from her and she hasnt gotten any? I think she is beyond vet care, should I euthanize her in my co2 chamber?