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What the sources say

AlpacaVicugna pacos

Every figure, record and mechanism on the Alpaca profile was written from a source, and this is the working table behind it: 58 claims checked word for word against these sources. The left column is what the page says. The right column is the source's own words, copied, not paraphrased; a ... marks a cut and[brackets] an insertion. Open any source and check it yourself.

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Source
01

Smithsonian's National Zoo and Conservation Biology Institute

Alpaca. Smithsonian's National Zoo and Conservation Biology Institute.

The page saysGrasses on sparse Andean mountainsides and valleys
The source saysIn their native South America, domesticated herds feed on grasses from the mountainsides and valleys of the Andes. For thousands of years, alpacas have lived where grass grows sparsely
The page saysa strict grazer that needs much less food than most animals its size
The source saysAlpacas are strict grazers. ... they require much less food than most animals their size.
The page saysNot Evaluated
The source saysThe alpaca is a small relative of the camel domesticated by Andean people for its wool.Note: GBIF's copy of the Red List returns NOT_EVALUATED for Vicugna pacos (Linnaeus, 1758), usage key 7515593, checked 2026-09-13. The Red List has no assessment for this domestic species. The vicuña's own 2018 assessment (10.2305/iucn.uk.2018-2.rlts.t22956a145360542.en) is a different species and does not apply.
The page saysThe Smallest Domestic Camelid
The source saysAlpacas are the smallest of the domesticated camelid species.
The page saysAlpacas are the smallest of the domesticated camelids
The source saysAlpacas are the smallest of the domesticated camelid species.
The page saysAdults usually weigh 45 to 90 kilograms and stand 0.8 to 1.1 meters at the shoulder
The source saysAdult alpacas usually range from 100 to 200 pounds (45 to 90 kilograms). ... their shoulder height is typically 32 to 40 inches (0.8 to 1.1 meters).
The page saysAndean people domesticated them as a source of fuel, meat, and fiber for fabric
The source saysAlpacas were fully domesticated by Andean people centuries before the Incas as a source of fuel, meat and fiber for fabric.
The page saysthat fiber has a hair-like structure that is more resilient and much stronger than Merino sheep wool
The source saysAlpaca fiber has a cellular structure similar to hair and is more resilient and much stronger than Merino sheep wool.
The page saysAlpacas are strict grazers that have lived for thousands of years where grass grows sparsely
The source saysAlpacas are strict grazers. ... For thousands of years, alpacas have lived where grass grows sparsely
The page saysthey need much less food than most animals their size
The source saysthey require much less food than most animals their size.
The page sayseach one needs at least one other alpaca to thrive
The source saysAlpacas need the companionship of at least one other alpaca to thrive.
The page saysThey communicate with a soft hum, other calls, and body language
The source saysAlpacas express themselves with a soft hum, other vocalizations and body language
The page saysA threatened alpaca gives a staccato alarm call that alerts the herd
The source sayswill alert the herd and their human keepers of perceived danger with a staccato alarm call.
The page saysThey also spit at each other to register a complaint
The source saysAlpacas rarely spit at people unless frightened or abused, but will use this form of communication with each other to register a complaint.
The page saysThey rarely spit at people unless frightened or abused
The source saysAlpacas rarely spit at people unless frightened or abused, but will use this form of communication with each other to register a complaint.
The page saysAlpaca fiber has a hair-like structure that is more resilient and much stronger than Merino sheep wool
The source saysAlpaca fiber has a cellular structure similar to hair and is more resilient and much stronger than Merino sheep wool.
The page saysthe fleece is virtually free of guard hair
The source saysThey are covered in a soft fleece that is virtually free of guard hair and occurs in a variety of colors.
The page saysIt comes in about 22 basic natural colors, with many variations and blends.
The source saysAlpacas exhibit a variety of natural colors, with approximately 22 basic fiber colors and many variations and blends.
The page saysSpitting is a form of communication.
The source saysAlpacas rarely spit at people unless frightened or abused, but will use this form of communication with each other to register a complaint.
The page saysthey use it with each other to register a complaint
The source saysAlpacas rarely spit at people unless frightened or abused, but will use this form of communication with each other to register a complaint.
The page saysThe smallest domestic camelid
The source saysAlpacas are the smallest of the domesticated camelid species.
The page saysgrows fiber much stronger than Merino wool
The source saysAlpaca fiber has a cellular structure similar to hair and is more resilient and much stronger than Merino sheep wool.
The page saysAlpacas are social herd animals whose only defense is flight
The source saysAlpacas are social herd animals, and their only defense is flight.Note: Current Smithsonian page. ADW's older, student-written account of hoof and spit defense against predators was cut from the body and FAQ 3 under the date rule: the current institution page wins.
The page saysThey feel safest in numbers
The source saysAs they feel safest in numbers and have such strong herding instincts, it is best not to have just one alpaca.
The page saysfor a herd animal that communicates with a soft hum
The source saysAlpacas express themselves with a soft hum, other vocalizations and body languageNote: vibe.reason: the pairing now rests on the alpaca's hum, not on geography

Source
02

Animal Diversity Web, University of Michigan

Lama pacos (alpaca). Animal Diversity Web, University of Michigan.

The page saysThe Andean altiplano and highlands from Peru to Argentina, at elevations from 1,000 to 4,800 meters
The source saysThe native range of Lama pacos includes the central and southern Andes from Peru to Argentina ... Range elevation 1000 to 4800 m
The page saysplus cushion plants and a woody shrub
The source saysthe alpaca diet was dominated by grasses such as Festuca nardifolia, Deschampsia caespitosa, and Agrostis tolucensis, cushion plants Oxychloe andina, bunch grasses Festuca orthophylla, and the woody shrub Parastrephia lucida.
The page saysTheir native range runs through the central and southern Andes from Peru to Argentina at up to 4,800 meters
The source saysThe native range of Lama pacos includes the central and southern Andes from Peru to Argentina at elevations of up to 4800 meters.
The page sayson the high plateau called the altiplano, where nights drop below freezing
The source saysAlpacas inhabit the Andean Altiplano, i.e. the Andean high plateau, preferably near wet areas. The climate of the Altiplano is severe, reaching temperatures of below 0°C during the night
The page saysIn one Chilean highland study, their diet was dominated by grasses, cushion plants, and a woody shrub
The source saysIn a highland region of Chile, Castellano et al. (2004) reported that the alpaca diet was dominated by grasses such as Festuca nardifolia, Deschampsia caespitosa, and Agrostis tolucensis, cushion plants Oxychloe andina, bunch grasses Festuca orthophylla, and the woody shrub Parastrephia lucida.
The page saysthen either flees or goes to investigate
The source saysIf the animal feels threatened, it will elicit an alarm call and either flee or go to investigate the source of danger.
The page saysa dominance stand-off between two alpacas may include spitting and pushing
The source saysA stand off posture is taken to show dominance. It is seen when two alpacas are standing extremely close to each other. ... This posture may be accompanied by spitting, pushing, and more aggressive behaviors.
The page saysAlpacas use communal dung piles, which may be a source of chemical communication among them
The source saysAlpacas use communal dung piles to deposit urine and feces. As has been argued for other South American camelids, these piles may be a source for chemical communication among alpacas.
The page saysAlpacas spit when they are in distress, fearful, or showing dominance
The source saysAlpacas engage in spitting when they are in distress, fearful, or to show dominance.

Source
03

AnAge: The Animal Ageing and Longevity Database, Build 15 2023

Vicugna pacos. AnAge: The Animal Ageing and Longevity Database, Build 15, 2023.

The page saysIn zoos they can live up to 25.8 years
The source saysThese animals can live up to 25.8 years in zoos

Source
04

Kadwell et al. 2001

Kadwell et al. (2001). Genetic analysis reveals the wild ancestors of the llama and the alpaca. Proceedings of the Royal Society of London. Series B: Biological Sciences.

The page saysFor a long time, the alpaca's wild ancestor was disputed
The source saysThe origins of South America's domestic alpaca and llama remain controversial due to hybridization, near extirpation during the Spanish conquest and difficulties in archaeological interpretation.
The page saysIts domestication has been dated to 6,000 to 7,000 years ago in the Peruvian Andes
The source saysRecent research has, however, linked the alpaca to the vicuña, dating domestication to 6000-7000 years before present in the Peruvian Andes.Note: Kadwell et al. report this date from earlier research ('Recent research has...'), so the page does not attribute it to their genetic evidence.
The page sayshybridization, near extirpation during the Spanish conquest, and difficult archaeology left the record hard to read
The source saysThe origins of South America's domestic alpaca and llama remain controversial due to hybridization, near extirpation during the Spanish conquest and difficulties in archaeological interpretation.
The page saysTradition credited both the alpaca and the llama to the guanaco
The source saysTraditionally, the ancestry of both forms is attributed to the guanaco, while the vicuña is assumed never to have been domesticated.
The page saysIn one genetic study, mitochondrial DNA placed about 80 percent of alpaca and llama samples in the guanaco lineage
The source saysMtDNA analysis places 80% of llama and alpaca sequences in the guanaco lineage, with those possessing vicuña mtDNA being nearly all alpaca or alpaca-vicuña hybrids.
The page saysalpacas are close to wild vicuñas and llamas to guanacos, with some hybridization in both directions
The source saysIn contrast to the mtDNA, these markers show high genetic similarity between alpaca and vicuña, and between llama and guanaco, although bidirectional hybridization is also revealed.
The page saysIts authors proposed reclassifying the alpaca as *Vicugna pacos*
The source says...the alpaca is descended from the vicuña, and should be reclassified as Vicugna pacos.
The page saysTraditionally, the guanaco got the credit
The source saysTraditionally, the ancestry of both forms is attributed to the guanaco
The page saysin one genetic study about 80 percent of alpaca and llama mitochondrial DNA samples fell in the guanaco lineage
The source saysMtDNA analysis places 80% of llama and alpaca sequences in the guanaco lineage
The page saysalpacas are genetically close to wild vicuñas, while llamas are close to guanacos, with some hybridization in both directions
The source saysthese markers show high genetic similarity between alpaca and vicuña, and between llama and guanaco, although bidirectional hybridization is also revealed.
The page saysCombining the markers, the study's authors suggested the alpaca is descended from the vicuña and should be reclassified as Vicugna pacos.
The source sayscombined marker analysis on a subset of samples confirms the microsatellite interpretation and suggests that the alpaca is descended from the vicuña, and should be reclassified as Vicugna pacos.

Source
05

Integrated Taxonomic Information System (ITIS)

Vicugna pacos (Linnaeus, 1758). Integrated Taxonomic Information System (ITIS).

The page saysthe name taxonomists list today, with *Lama pacos* kept as a synonym
The source saysVicugna pacos (Linnaeus, 1758) ... Synonym(s): Lama pacos (Linnaeus, 1758) ... Taxonomic Status: Current Standing: valid

Source
06

Dittmann et al. 2014

Dittmann et al. (2014). Methane Emission by Camelids. PLoS ONE.

The page saysTheir foregut has three compartments: the first two form a fermentation chamber similar to a ruminant's rumen, and the third is a long tube that resembles a ruminant's abomasum, though these compartments are not direct counterparts of the ruminant ones
The source saysThe camelid foregut can be separated into three compartments ... The first two compartments (C1 and C2) represent a fermentation chamber similar to the reticulorumen of ruminants. The last elongated tubular compartment (C3) shows similarities to the abomasum of ruminants ... Despite structural similarities with the ruminant foregut, the camelid compartments cannot be considered as direct homologues.Note: 'rumen' simplifies the source's 'reticulorumen' (the rumen and reticulum together) for the reader.
The page saysKept in respiration chambers, alpacas, llamas, and Bactrian camels produced about 0.32 liters of methane per kilogram of body weight each day, a little over half the published figure for domestic ruminants on roughage diets
The source sayswe carried out respiration chamber measurements with three camelid species ( Vicugna pacos , Lama glama , Camelus bactrianus ; n = 16 in total) ... The camelids produced less methane expressed on the basis of body mass (0.32±0.11 L kg −1 d −1 ) when compared to literature data on domestic ruminants fed on roughage diets (0.58±0.16 L kg −1 d −1 ).Note: 0.32 / 0.58 = 0.55, hence 'a little over half'.
The page saysGram for gram of fiber digested, though, camelids release about as much methane as ruminants
The source saysthere was no significant difference between the two suborders when methane emission was expressed on the basis of digestible neutral detergent fiber intake (92.7±33.9 L kg −1 in camelids vs. 86.2±12.1 L kg −1 in ruminants).
The page sayswhich suggests their gut microbes make it in similar ways
The source saysThis implies that the pathways of methanogenesis forming part of the microbial digestion of fiber in the foregut are similar between the groups
The page saysThe study explains the gap by camelids' generally lower food intake for their size
The source saysthe lower methane emission of camelids can be explained by their generally lower relative food intake.
The page saysthe most likely reason is a generally lower metabolism
The source saysThe most likely explanation for the lower absolute CH 4 production in camelids, therefore, is their generally lower metabolism associated with lower nutrient requirements and thus a lower food intake per unit of body mass

Source
07

Tu et al. 2020

Tu et al. (2020). Landscape of variable domain of heavy‐chain‐only antibody repertoire from alpaca. Immunology.

The page saysmakes antibodies with no light chain
The source saysHeavy-chain-only antibodies (HCAbs), which are devoid of light chains, have been found naturally occurring in various species including camelids and cartilaginous fish. ... We cloned and sequenced the full-length coding region of VHHs in Alpaca (Vicugna pacos) via HTS in this study.
The page saysAntibodies with no light chain, whose heat-stable variable regions scientists use in diagnostics, bio-imaging, and treatments.
The source saysHeavy-chain-only antibodies (HCAbs), which are devoid of light chains, have been found naturally occurring in various species including camelids ... Because of their high thermostability, refoldability and capacity for cell permeation, the variable regions of the heavy chain of HCAbs (VHHs) have been widely used in diagnosis, bio-imaging, food safety and therapeutics.
The page saysAntibodies Missing a Chain
The source saysHeavy-chain-only antibodies (HCAbs), which are devoid of light chains, have been found naturally occurring in various species including camelids and cartilaginous fish.
The page saysAlpacas, like other camelids, make antibodies with no light chain
The source saysHeavy-chain-only antibodies (HCAbs), which are devoid of light chains, have been found naturally occurring in various species including camelids and cartilaginous fish.
The page saysThe variable region of these heavy-chain-only antibodies is heat-stable and able to refold, and scientists widely use it in diagnostics, bio-imaging, food safety, and medical treatments
The source saysBecause of their high thermostability, refoldability and capacity for cell permeation, the variable regions of the heavy chain of HCAbs (VHHs) have been widely used in diagnosis, bio-imaging, food safety and therapeutics.Note: The script's 'only' flag is the source's own term 'heavy-chain-only', not an added absolute.

How the table was made: a writer drafted the profile from these sources and logged each claim with its quote, a reviewer with nothing but this table checked every sentence said no more than its quote, and a script confirmed each quote appears word for word in the source. The method is in the site'sAbout page.