First season, 1912 By the time Mawson decided to make his main camp at
Cape Denison on 8 January 1912, there were 29 adult dogs left on board. One of these, Mrs Bruce, died during the time the ship was being unloaded and the main base established, and her pup died on 11 January when it was accidentally washed overboard by the crew. Mawson and
Frank Wild agreed that 19 of the remaining dogs would stay at the main base and 9 would accompany Wild and his party as they sailed west to set up a second base. At Cape Denison the dogs initially fared well. Although the winds were fierce and blizzards frequent, the dogs seldom suffered unless the temperatures were well below zero; some of the stronger dogs were quite happy to sleep outside even when the conditions were severe enough to keep the men trapped in the huts. When the conditions became too extreme the dogs were brought in to the "verandah", a partially enclosed passage outside the door of the hut, or into the hangar. In July conditions deteriorated to such an extent that even though the dogs had been taken into the verandah, they were still often found frozen to the ground – Mawson noted "They whine piteously for they can't move". A hierarchy among the dogs was quickly established. Basilisk, who was "quick as lightning when it came to a scrap", became the leader, Ginger Bitch (originally and officially called Alexandra) was his constant companion, and Shackleton was next in line as top dog. Another dog, Jack Johnson – named after the
boxer – was constantly testing himself against the other dogs, he had heavy scarring as result. There was little attempt to control breeding; any pups that survived to adulthood would be useful additions to the sledge teams. Pups were born regularly, but few survived more than a few days; they were either eaten by their mothers, killed by the other dogs, or perished in the harsh conditions. It was not until March 1912 though that the first casualty occurred among the immigrants. On 7 March Mawson recorded that one of the dogs, Caruso, had been found with a cord wound tightly round his neck. McLean operated on him. Although the wound was deep and over a long, his condition initially improved, but after a few weeks he deteriorated and on 30 March he had to be shot. On 28 June McLean accidentally mixed some broken glass into the dog's food. Mawson was anxious about them but they did not appear to experience any ill effects. Mawson planned for a number of sledging parties to set out as soon as the weather allowed. The work outside the camp mostly involved laying up stores in supply depots in preparation for these journeys. Serious training for the dogs was underway by June and progressed well. In hauling the supplies out to the depots the dogs were invaluable; six dogs could pull a sledge with a load of . Unfortunately the men became somewhat blase about managing the dogs and on 15 August 1912 Mawson, Ninnis and
Cecil Madigan, returning from a drop at the supply depot known as Aladdin's Cave noticed that the dogs which had accompanied them had not followed them when they had left for the base. The weather was already closing in and it was decided that they could not go back to fetch the dogs. The blizzard lasted for days and it was not until 21 August that a rescue party consisting of
Bob Bage, Mertz and
Frank Hurley could set out. By the time the rescuers reached Aladdin's Cave, the dogs – frozen and starving – were close to death. Grandmother was in the worse condition and despite the men's best efforts died four hours later. Franklin and Basilisk were left behind again on 26 September. Mertz, Hurley and Ninnis set out rescue them on 1 October when the blizzard lifted but were forced to turn back and were not able to set out again until 3 October. They eventually located the cave but the dogs were no longer there; when the group returned to the huts they found the two dogs had arrived just ahead of them, none the worse for wear. Early in September, Scott disappeared (Mawson believed he had probably fallen into a
crevasse). This left 16 dogs to support the three sledging parties planned for the beginning of November, but Blizzard, one of the pups that had been born to Gadget early in the year, had survived and was also now big enough to pull. As
Frank Bickerton's party was to test the "
air-tractor sledge", it did not require dogs; Mawson decided that his party would take the 17 dogs and Madigan's team, which would be on easier ground closer to the coast, would man-haul. The timing for the start of the sledging journey was unfortunate: all the bitches were on the point of giving birth. On 17 November, just after the three sledging parties separated, Gadget was killed because she had proved a poor puller and was judged to be tired out from carrying her pups. She was "cut up into about 24 rations counting 7 pups" to be fed to the other dogs, but they did not seem to enjoy eating her. Fusilier and Jappy followed soon afterwards; Jappy was fed to the other dogs along with the pups of Ginger Bitch. Betli disappeared on 27 November when the dogs were let off. Blizzard was injured by Mertz on skis on 18 December and had to be shot on 28 November. On 14 December disaster struck Mawson's team. Ninnis, his sledge, and the six of the strongest dogs: Basilisk, Ginger Bitch, Shackleton, Castor, Franklin, and John Bull fell into a crevasse. Having lost their travelling companion, half the dogs and most of their supplies, Mawson and Mertz had no choice but to turn for home. They immediately began to supplement their meagre rations by killing and eating the remaining dogs. George was dispatched on 15 December, Johnson on 17 December, Mary on 18 December and Haldane on 21 December. The men had to lighten the load for the remaining dogs by discarding equipment; among the items they left was the rifle, so when they came to kill Pavlova on 23 December they had to do it with a knife. The final dog, Ginger, was killed on 28 December. Mertz died early on 8 January 1913 – it is generally thought that he suffered from
vitamin A poisoning brought on by eating the dogs' livers. File:Basilisk & Ginger at Main Base photograph by Xavier Mertz.jpg|Basilisk and Ginger at Cape Denison File:Sledge-dogs-at-winter-quarters-Cape-Denison-Hurley.png|Some of the first season dogs at Cape Denison File:Greenland esquimaux dogs (Basilisk and Ginger-bitch), Antarctica, 1911-1914 - Frank Hurley (8442222877).jpg|Basilisk and Ginger Bitch at Cape Denison
Second season, 1913 Mawson made it back to base on 8 February 1913. All of the original dogs that had landed at Cape Denison were now dead; three of Ginger's pups survived – D'Urville, Ross, and Wilkes. Just before he left his
Antarctic base, Amundsen had been informed that Mawson may need resupplying with dogs for a second season, so he had taken all his surviving animals on board – he had been planning on leaving a good number behind. When
Aurora steamed out of Commonwealth Bay on 8 February 1913 she left behind 21 dogs that Amundsen had presented to the AAE when he put in at Hobart. Eleven of these were almost immediately shot as there were estimated to be provisions only for about 13 dogs. The next season was mostly uneventful for the dogs. Madigan took over the duties of dog-handler. Unlike the previous year, no clear leader emerged among the dogs; instead there were small factions: the three surviving pups of Ginger: D'Urville, Ross and Wilkes formed a group; George and Lassesen joined Peary and Fix; and Colonel was the leader of the other dogs against these two groups. There was a good deal of fighting; Lassesen had to be shot after being set upon, and George was attacked a few days later. George had been set upon by Ginger's pups, and Mawson suspected they were to blame for Lassesen's death too. After Lassesen's death, Fix, Peary and George would often separate themselves from the rest of the dogs, taking shelter amongst the rocks by the Magnetograph House. In August, Peary was attacked by all the other dogs and badly wounded; the state of his paw was of particular concern. Mary, one of the dogs given by Amundsen, gave birth on 8 April 1913. One of her pups, Hoyle, survived to depart with the expedition, but Mary herself fell ill and had to have an operation on 30 August. It seems she did not improve and she died during a second operation on 29 October. Hoyle was treated with benevolence by the other dogs while he was a pup. Once he was put in with the other dogs on 17 July, he quickly joined the group with Ginger's pups. The only major sledging activity of the second season was a trip to try to recover some abandoned equipment from the previous year's journeys. The dog team included Colonel, George, Wilkes and D'Urville.
Aurora returned on 13 December 1913 to collect the remaining members and on 23 December the remaining twelve dogs were brought on board ready for the ship's departure the next day.
Dogs at the main base ==Western base==