Guanaco

Identification

The guanaco is a graceful camelid standing 1.0 to 1.3 metres at the shoulder, with a body length of 2.1 to 2.2 metres and weighing 90 to 140 kilograms. One of South America's largest native terrestrial mammals, it is closely related to the domesticated llama. The guanaco's coat is remarkably uniform in colour, ranging from light brown to dark cinnamon with white underparts and a distinctive grey face. Its small, straight ears and thick-skinned neck are characteristic features. The fibre is particularly prized for its softness and warmth, comparable to cashmere, with guard hairs surrounding a luxuriously soft undercoat.

Range & Habitat

Guanacos inhabit the steppes, scrublands and mountainous regions across South America, found in the altiplano of Peru, Bolivia and Chile, and throughout Patagonia, with small populations in Paraguay and a reintroduced group in the Falkland Islands. They are most numerous in Argentina and the Patagonian regions, where livestock competition is limited. Remarkably, some guanacos survive in the Atacama Desert, one of Earth's driest places, exploiting "fog oases" or lomas where cool ocean air creates moisture that sustains cacti and lichens. They inhabit altitudes up to 4,000 metres, except in southern Patagonia where ice prevents this.

Behaviour & Diet

Guanacos are diurnal herbivores that live in herds of females and young led by a dominant male, while bachelor males form separate groups that may contain up to 50 individuals. They graze on grasses, shrubs, herbs, lichens, fungi, cacti and flowers, using a specialised three-chambered forestomach for digestion similar to ruminants. When danger approaches, the herd male alerts others with a bleating call. Their blood is exceptionally rich in red blood cells—approximately 68 million per teaspoon, four times that of humans—enabling survival at high altitudes with low oxygen levels.

Best Time & Places to See It

Guanacos are most robustly populations in Argentine and Chilean Patagonia, particularly in Tierra del Fuego and Torres del Paine National Park, where populations have recovered significantly. They are diurnal animals, making daytime observation possible across open grasslands and scrublands. The species responds to forage availability, occupying different zones seasonally, so visiting during the breeding season may offer better viewing opportunities as herds concentrate in areas of lower food availability.

Photography Tips

The guanaco's uniform colouration and graceful build photograph well against Patagonian landscapes. Their speed—capable of running at 56 kilometres per hour over steep, rocky terrain—means fast shutter speeds are essential for action shots. The open grasslands where they graze offer excellent visibility and minimal obstruction. Their alert nature means patience is rewarded; position yourself downwind and move slowly to capture behavioural moments such as the herd male's warning calls or the distinctive grey face in detail.