Especially because of all the cold weather and people who are experiencing it who are unfamiliar with it... this is a great lesson to remember!
I had triplet goat kids born several years ago in 20+ below zero weather in an unheated barn. Doe went into labor a few days before I anticipated it, of
course in the middle of the night. I was alerted that something was up by my dogs barking. When I got to the barn, one kid was on the floor, not only not moving, but the hair was frozen, unblinking and the mom was ignoring it and in the process of delivering the second. I was devastated at the "loss" of the kid as it was my first time kidding and I really like my goats a lot. The thought went through my mind "never dead until you are warm and dead". I picked the kid up and... dropped her inside of my shirt (BRRRR!!! so cold!), but then was distracted by the arrival of not only the second kid, but the third followed quickly. I'm fortunate I had not only an experienced doe, but also a dog who pitched in to help with cleaning, drying and keeping the kids warm. I have no idea how much time had elapsed, but kids 2 and 3 were up on the feet, dried and nursing, when I felt a feeble movement inside of my shirt (I had been so focused on the 2 and 3 kid, that I had forgotten about the first kid). She was very much alive. She ended up minus about 1/3 of an inch of both ears, but has produced several very nice kids of her own though the years for me. When I picked her up off the barn floor, it wasn't as if she was cold and dying, I thought she was already dead. There were no detectable signs of life.
For everyone who is going through the cold right now... please keep this in mind... it may save the life of a chilled animal (or scarier still... human!).