Judging by the online climate map, the invasion of Arctic air in Texas has almost stopped; and I think solarization will help raise the temperature, yet geographic latitude matters.
There was a recent thread here about the survival of exotic animals in the cold, there was a perfectly correct remark about the need for a"barn and a chow". But there is a third element, which is very important for some - the availability of water. Not everyone can eat snow. Moreover, even those animals that are adapted to a normal winter, still try to use watering holes. Here I found a recent photo: a washout on a stream. All around are the tracks of beavers that support this hole in the ice, and the tracks of roe deer. The temperature is about -10C.
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How to provide such a watering hole? Of course, it is difficult, there is not a running stream with beavers everywhere; you either need to maintain the hole manually, or throw a pipe with air supply to the bottom, as is done in zoos and some farms. This, by the way, saves the fish from lack of oxygen.