The Dogs "Dewey" & "Truman" are named for the 1948 U.S. Presidential candidates Thomas E. Dewey and Harry S. Truman.
Based on a Japanese expedition to the South Pole in 1958, in which the party was faced with extreme weather conditions.
The dogs spend almost all of their isolation in daylight when, in fact, they were enduring the southern winter, well south of the Antarctic Circle, and would thus have been in prolonged darkness.
The name of the "Lamborghini" of Snow Cats that they borrowed from the Italian camp was named "Mare Biscotto", it translates to "Sea Biscuit".
Second unit filming in Greenland was referred to by crew members as the "Amundsen Expedition". This was a reference to second unit director/director of photography Mitchell Amundsen, and to Roald Amundsen, the first man to reach the South Pole.