Carlos Augusto Rodrigues, 35, separates cattle on a ranch where he works, in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, September 1, 2020. REUTERS/Amanda Perobelli

A jaguar rubs itself against vegetation as it walks through smoke from a fire nearby, in Encontro das Aguas State Park in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, September 3, 2020. REUTERS/Amanda Perobelli

Workers rest after trying to put out a fire on a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

Dorvalino Conceicao Camargo, 56, who works on a ranch, drinks a cup of coffee before starting work for the day, in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 29, 2020. REUTERS/Amanda Perobelli

A firefighter holds a hose as he attempts to extinguish a fire on a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 26, 2020. REUTERS/Amanda Perobelli

Isabella Cristina Pereira Britto, a veterinary student, and Eduarda Fernades, a local guide, inspect a dead snake in an area that was burnt in a fire in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 31, 2020. REUTERS/Amanda Perobelli

Carlos Augusto Rodrigues, 35, gives Rafael Silva, 16, a bottle filled with water to help put out a fire on a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

A tree burns in a fire in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 29, 2020. REUTERS/Amanda Perobelli

Sebastiao Baldi Silva Junior, 40, who works on a farm, attempts to put out a fire on a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 26, 2020. REUTERS/Amanda Perobelli

Farm employees stand in front of a burning fire at a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 26, 2020. REUTERS/Amanda Perobelli

An aerial view shows smoke from a fire rising above vegetation around the Cuiaba river in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

A cow stands amongst an area that was burnt in a fire at a ranch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 27, 2020. REUTERS/Amanda Perobelli

Carlos Augusto Rodrigues, 35, who works on a farm, watches tv after finishing work for the day, in The Pantanal, the world's largest wetland, in Mato Grosso state, Brazil, September 2, 2020. REUTERS/Amanda Perobelli

Dorvalino Conceicao Camargo, 56, who works on a ranch, tries to put out a fire on a ranch near where he works in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

Dorvalino Conceicao Camargo, 56, stands at the ranch where he works as he looks out in front of smoke from a fire, rising into the air, in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 29, 2020. REUTERS/Amanda Perobelli

An aerial view shows burnt trees and vegetation in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

Dorvalino Conceicao Camargo, 56, who works on a ranch, attempts to put out a fire with a tree branch in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

A dead caiman is pictured in an area that was burnt in a fire in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 31, 2020. REUTERS/Amanda Perobelli

A tree that was partially burnt in a fire stands amongst burnt vegetation, in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, September 2, 2020. REUTERS/Amanda Perobelli

Firefighters from the State of Mato Grosso fill their truck with water as they prepare to extinguish a fire in front of a smoke funnel, on a farm in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 28, 2020. REUTERS/Amanda Perobelli

A man who works on a farm looks at smoke from a fire rising into the air in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, August 29, 2020. REUTERS/Amanda Perobelli

Smoke from a fire rises into the air as trees burn amongst vegetation in the Pantanal, the world's largest wetland, in Pocone, Mato Grosso state, Brazil, September 3, 2020. REUTERS/Amanda Perobelli