Flying w/ Vizsla over holidays. Besides airline guidelines, what precautions should take regarding cold temp?

needentoknow asked: I have flown many times with Maggie, but not during the winter.  Do they make insulated crates? Is a jacket and blankets enough for her?  Concerned if she doesn’t make it on the connecting flight if she is going to sit on a tarmack for hours in the cold in Salt Lake City.Content [...]