Guanaco

Guanacos roam the open steppes and rugged Andean foothills in family bands led by a dominant male, who patrols high vantage points and issues sharp, bleating alarm calls when danger approaches. Their thick double coats insulate against extreme temperature swings, while specialized high-affinity hemoglobin allows efficient oxygen transport in thin mountain air. Young chulengos can run alongside their mothers within hours of birth, vital for evading lurking pumas across the exposed plains.