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For other uses, see Guanaco (disambiguation).
Temporal range: 1.4–0Ma
Early Pleistocene – Recent
Guanaco 09.24.jpg
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Camelidae
Genus: Lama
Species: L. guanicoe
Binomial name
Lama guanicoe
(Müller, 1776)
Lama guanicoe range.png
Guanaco range

The guanaco (Lama guanicoe) is a camelid native to South America that stands between 1 and 1.2 metres (3 ft 3 in and 3 ft 11 in) at the shoulder[2] and weighs about 90 kg (200 lb). The colour varies very little (unlike the domestic llama), ranging from a light brown to dark cinnamon and shading to white underneath. Guanacos have grey faces and small straight ears. The name guanaco comes from the South American language Quechua word wanaku (old spelling, huanaco).[3] Young guanacos are called chulengo(s).[4]

Population and distribution[edit]

Herd of Guanacos

The guanaco is a vulnerable animal native to the arid, mountainous regions of South America. Guanaco are found in the altiplano of Peru, Bolivia, Ecuador, Colombia, Chile, and Argentina. In Chile and Argentina, they are more numerous in Patagonian regions, as well as in places like the Torres del Paine National Park, and Isla Grande de Tierra del Fuego. In these areas, they have more robust populations, since there are limitations on grazing competition from livestock. Bolivian Indians have been known to raise guanaco to help them regain their population stability.[clarification needed] A guanaco’s typical lifespan is 20 to 25 years.[citation needed]

Estimates, as of 2011, place their numbers at 400,000 to 600,000.[5]

Guanacos live in herds composed of females, their young and a dominant male. Bachelor males form a separate herd. While female groups tend to remain small, often containing no more than ten adults, bachelor herds may contain as many as 50 males. When they feel threatened, guanaco alert the herd to flee with a high-pitched bleating call. The male will usually run behind the herd to defend them. They can run with a speed of 56 km (35 mi) per hour, often over steep and rocky terrain.[6] They are also excellent swimmers.

Guanacos are one of the largest wild mammal species found in South America (along with the manatee, the tapir, and the jaguar). They have only one natural predator, the cougar.[7] Guanacos will often spit when threatened.[8]

To protect its neck from harm, the guanaco has developed thicker skin on its neck, a trait still found in its domestic counterparts, the llama and alpaca, and its wild cousin, the vicuña. Bolivians use the necks of these animals to make shoes, flattening and pounding the skin to be used for the soles. In Chile, hunting is allowed only in Tierra del Fuego, where the only population not classified as endangered in the country resides. Between 2007 and 2012, 13,200 guanacos were legally hunted in Tierra del Fuego.[9]

Mating season[edit]

Mating season occurs between November and February, during which males often fight violently to establish dominance and breeding rights.[clarification needed]

Eleven-and-a-half months later, a single chulengo is born.[10] Chulengos are able to walk immediately after birth. Male chulengos are chased off from the herd at approximately one year of age.


Although the species is still considered wild, there are around 300 guanaco in US zoos and around 200 registered in private herds.[11] Guanacos are the parent species of the domesticated llama.

Hemoglobin levels[edit]

Guanacos are often found at high altitudes, up to 13,000 feet above sea level, except in Patagonia, where the southerly latitude means ice covers the vegetation at these altitudes. To survive the low oxygen levels found at these high altitudes the blood is rich in red blood cells. A teaspoon of guanaco blood contains about 68 billion red blood cells, ~four times that of a human.[12]

Guanaco fiber[edit]

Guanaco fiber is particularly prized for its soft, warm feel and is found in luxury fabric. The guanaco's soft wool is valued second only to that of the vicuña. The pelts, particularly from the calves, are sometimes used as a substitute for red fox pelts, because the texture is difficult to differentiate. Like their domestic descendant, the llama, the guanaco is double coated with a coarse guard hair and soft undercoat, which is about 16-18 µ in diameter and comparable to the best cashmere.[13]

Atacama Desert[edit]

The remains of a Guanaco scattered in the Atacama desert, southwest of Cerro Paranal. The only intact section of skin is the one around the neck

Some Guanacos live in the Atacama Desert, where in some areas it has not rained for over 50 years. A coastline running parallel to the desert enables them to survive. Where the cool water touches the hot land, the air above the desert is cooled, creating a fog and thus, water vapor. Winds carry the fog across the desert, where cacti catch the water droplets and lichen that cling to the cacti soak it in like a sponge. When the guanacos eat the cacti flowers and the lichen, the water is transferred to them.[14]

See also[edit]

Guanacos near Torres del Paine, Chile


  1. ^ González, B., Funes, M., Cuéllar, E., Villalba, L., Hoces, D. & Puig, S. (2008). Lama guanicoe. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 5 April 2009. Database entry includes a brief justification of why this species is of least concern.
  2. ^ Stahl, Peter W. (4 April 2008). "Animal Domestication in South America". In Silverman, Helaine; Isbell, William. Handbook of South American Archaeology. Springer. pp. 121–130. ISBN 9780387752280. 
  3. ^ "Guanaco – LAMA GUANICOE". America Zoo. Lesley Fountain. Archived from the original on 28 April 2009. 
  4. ^ "Species Profile: Guanaco". Concervación Patagonia. 
  5. ^ C. Michael Hogan. 2008. Guanaco: Lama guanicoe,, ed. N. Strömberg
  6. ^ Discovery Animal Guides - Guanacos
  7. ^ San Diego Zoo's Animal Bytes.
  8. ^ National Geographic
  9. ^ Servicio Agrícola y Ganadero, 2012. Plan de Manejo para a población de guanacos en el área agropecuaria de Tierra del Fuego (Chile). Servicio Agrícola y Ganadero, Gobierno de Chile. Punta Arenas, 47pp.+Annexes.
  10. ^ "Guanaco: Lama guanicoe". World Association of Zoos and Aquariums. Retrieved 10 December 2012. 
  11. ^ "ROYAL FIBERS - Guanacos Facts". Archived from the original on 25 April 2012. Retrieved 17 March 2015. 
  12. ^ "Visit Englands Finest Safari Park & Zoo near Liverpool & Manchester". Retrieved 2013-07-16. 
  13. ^ Beula Williams (2007-04-17). "Llama Fiber". International Llama Association. 
  14. ^ Produced by Huw Cordey (2006-04-02). "Deserts". Planet Earth. BBC. BBC One. 

External links[edit]