Passage: The head of the delegation to Riel was Gabriel Dumont, a respected buffalo hunter and leader of the Saint-Laurent Métis who had known Riel in Manitoba. James Isbister was the lone Anglo-Métis delegate. Riel was easily swayed to support their cause—which was perhaps not surprising in view of Riel's continuing conviction that he was the divinely selected leader of the Métis and the prophet of a new form of Christianity. Riel also intended to use the new position of influence to pursue his own land claims in Manitoba. The party departed 4 June, and arrived back at Batoche on 5 July.

Question: What animal did Dumont search for and kill?
buffalo