Roald Amundsen's expedition was planned around 97 sled dogs. On his first try, two of his dogs froze to death in the temperatures. He tried a second time and was successful. Amundsen was covering a day, with stops every to build a cairn to mark the trail. He had 55 dogs with him, which he culled until he had 14 left when he returned from the pole. On the return trip, a man skied ahead of the dogs and hid meat in the cairns to encourage them to run.