In this May 17, 2017 photo, cowboy Joao Aquino Pereira rides his horse in Corumba, in the Pantanal wetlands of Mato Grosso do Sul state, Brazil. Each day, the men and animals traverse about 11 miles from dawn until 3 p.m., in temperatures averaging about 90 degrees Fahrenheit during the day. (Photo by Eraldo Peres/AP Photo)
