Golden Lancehead (Bothrops insularis), University of Sao Paulo researcher Marcio Martins holds one snake while watching another, a deadly venomous snake living only on Queimada Grande Island, Atlantic Forest, Brazil

Golden Lancehead (Bothrops insularis) University of Sao Paulo researcher Marcio Martins holds one snake while watching another, a deadly venomous snake living only on Queimada Grande Island, Atlantic Forest, Brazil, critically endangered