Did the dog that fell from the snow-capped mountains during the Antarctic expedition die? What's his name?

The best answer is that the dog that fell in the movie died, which is not clear in reality. I don't think it should die. The name of the dead dog is Dewey, because it has a close-up of the corner of its eye and a scar when it falls down. At the beginning of the film, when Truman introduced the dog to the professor, he said that Dewey bit his eye. You can relive this classic movie if you have nothing to do. Pay attention to two time points, 12 minutes and 46 seconds and 1 hour 03 minutes and 35 seconds.