I really enjoyed this story by Vincent Miskell; it's an updating of Jack London's "To Build A Fire." (The story and the dog are updated.) And it's combined with the Jack London classic. You can find it on Amazon Kindle and Smashwords. In the SF version, which takes place on an icy moon of Saturn, the situation is even more dangerous, and I loved the dog. What a wonderful creation--and companion--he is!