A herd of bison graze on rolling plains in Grasslands National Park, Sask. A humpback whale breaches in the waters off the coast of the Great Bear Rainforest, B.C. Two polar bears lunge at each other in a playful display in Wapusk National Park, Man. The 40,000-member strong Can Geo Instagram community is wild for Canada's wildlife. Here are our favourites from the third edition of Ultimate Canadian Instagram Photos, on newsstands now.