Open Access

Barking up the same tree: a comparison of ethnomedicine and canine ethnoveterinary medicine among the Aguaruna

Journal of Ethnobiology and Ethnomedicine20095:33

DOI: 10.1186/1746-4269-5-33

Received: 09 July 2009

Accepted: 10 November 2009

Published: 10 November 2009

Abstract

Background

This work focuses on plant-based preparations that the Aguaruna Jivaro of Peru give to hunting dogs. Many plants are considered to improve dogs' sense of smell or stimulate them to hunt better, while others treat common illnesses that prevent dogs from hunting. This work places canine ethnoveterinary medicine within the larger context of Aguaruna ethnomedicine, by testing the following hypotheses: H1 -- Plants that the Aguaruna use to treat dogs will be the same plants that they use to treat people and H2 -- Plants that are used to treat both people and dogs will be used for the same illnesses in both cases.

Methods

Structured interviews with nine key informants were carried out in 2007, in Aguaruna communities in the Peruvian department of Amazonas. Informants provided freelists of plants given to dogs and explained the purpose, preparation and route of administration used. For each plant, informants also described any uses for treating people. Botanical voucher specimens were collected and additional informal observations were made, accompanying people on hunting trips.

Results

Out of 35 plant species given to dogs, 29 (83%) are also given to humans for some medicinal purpose, while five are used only for dogs. However, the same plant is used to treat the same illness in both humans and dogs in only 53% of the cases. Forty-three percent of plants used to treat a particular illness for both dogs and people are administered in the same manner for both.

Conclusion

Results suggest that Aguaruna canine ethnoveterinary medicine is, at least partly, an independent cognitive domain. Some of the difference in plant use between dogs and people can be explained by the fact that certain diseases mentioned only apply to dogs. Although reports of canine ethnoveterinary medicine are very sparse in the literature, Aguaruna practices show some similarities with a few trends reported for other Amazonian societies, particularly, in the prevalence of the nasal route of administration, the use of plant-based psychoactives and in the importance of ants and wasps, in some form, for training dogs.

Background

Ethnoveterinary medicine has seen increasing recognition as a distinct area of study since the publication of two important review articles on the subject [1, 2]. Recent research has addressed a broad range of topics within this field, including plant-based [3, 4] and non plant-based [5] preparations, folk categories of illness [6], efficacy of treatments [7] and zoopharmacognosy [8, 9]. A large majority of the work has been on ruminants, including sheep [6, 10], cows [5] and camels [11]. This trend is not surprising, considering the economic importance of ruminants in many societies.

However, studies focusing on remedies for hunting dogs are largely lacking. In one notable exception, Lans et al [12] studied hunters' remedies in Trinidad. The authors list 36 plant species and three animals used either to improve dogs' ability to track and catch game, or to treat common injuries such as snake bite, mange and sprains. A few other authors have included data on dog medicines within larger studies. Glenn Shepard [13, 14] describes the use of psychoactive and other medicinal preparations among the Matsigenka of Peru. Im Thurn's [15] classic ethnography of indigenous peoples of Guiana includes several brief examples of hunting charms. The present study aims to contribute in a small way to the further development of this important but understudied aspect of ethnoveterinary medicine.

The research focuses on the plants that the Aguaruna Jívaro of Peru use for treating dogs and examines whether people use the same ones in the same way to treat themselves. As in many lowland South America societies [16, 17], dogs play a key role in hunting for the Aguaruna. They serve the secondary purposes of guarding homes, and to some extent, companionship. Dogs help to track and capture the following game animals: Paca (Cuniculus paca, kashai in Aguaruna), Agouti (Dasyprocta spp., kayuk), Acouchi (Myoprocta prattii, yugkits), various armadillos (Dasypus spp., shushui) (Figure 1), White-lipped Peccary (Tayassu pecari, yugkipak), Collared Peccary (Pecari tajacu, paki), Southern Amazon Red Squirrel (Sciurus spadiceus, waiwash), Gold Tegu (Tupinambis teguixin, iwan), and various species of turtle (kugkuim).
Figure 1

One key informant, Agustin T. with small breed of dog used for hunting armadillos.

Due to decreasing availability of preferred game species, people in the study communities now also hunt some animals that they did not formerly. These include Red Brocket Deer (Mazama americana, japa), considered one of the forms that the soul of deceased person can take, and Lowland Tapir (Tapirus terrestris, pabau), thought to be dirty because they defecate in water.

The Aguaruna traditionally hunted with uum-- 'blowguns' and still do rarely. They put tseas-- poison made from local plants in the genera Potalia and Strychnos (Loganiaceae) on the darts [18]. When a hunter would hit an animal, especially a large one, it would often run for a distance before the poison took full effect. Dogs would track down the body. Currently, most hunters use guns and dogs still play a role tracking wounded animals. When a dog is chasing an animal, the owners encourage it by shouting after it. Men yell "esaisaik," but women say "estai." To call the dog back, they shout "biaag, biaagand the dog's name."

Informants described how dogs learn to hunt animals. Young dogs start by chasing after small birds, and begin pursuing agoutis, as they grow. Mature dogs tend to stick with one particular animal, although they can be trained to change their focus. Accordingly, Aguaruna families try to keep five to eight dogs to hunt a variety of game. Im Thurn [15] notes that indigenous peoples of Guiana also trained each dog they owned to hunt a specific animal.

Dogs play an important role in trapping animals inside their dens. The success of this technique depends on the animal in question. Agoutis and armadillos, for example, remain in their burrows, and the hunter digs them out with a sharp stick. Pacas are more difficult to trap this way, because they emerge quickly and, being adept swimmers, head for streams or lakes. Aguaruna informants explained that paca dens have three holes, so they can always escape out one.

In the course of hunting, dogs commonly suffer from cuts and skin infections. They can be injured by some animals, particularly pacas, peccary and Ring-tailed Coati (Nassua nassua, kushi) [18], as well as dapi -- 'venomous snakes' and a variety of wasps and ants. Dogs are also prone to parasites and other digestive ailments that interfere with their hunting ability.

This work aims to address hunting medicines within the larger framework of Aguaruna ethnomedicine. McCorkle [1] points out that ethnoveterinary studies have not often compared medicines given to animals with those given to people, even though it seems natural to do so. Wanzala et al [2] also argue for the need to make the study of ethnomedicine and ethnoveterinary medicine complementary. Hirschkind [5: 290] notes, from her work in highland Ecuador, that " [d]omestic animals are understood to share many human characteristics, needs and desires." Gradé et al [19] argue that sheep owned by Karamojong pastoralists of Uganda self medicate by grazing on certain local plant species. Part of their argument rests on the fact that the Karamojong use many of the same species medicinally themselves.

The idea for the present study came while I was doing research for my dissertation [20], on the subject of how Aguaruna men identify trees. I was struck by the fact that tree species reported to have a medicinal effect for people were also often said to be useful for treating dogs. Indeed many of the kinds of illness that hunting dogs commonly suffer, such as gastrointestinal problems, cuts and snake bites are also common problems for human hunters. I began to wonder whether people always give dogs the same remedies that they take themselves or whether there are some medicines only for dogs.

Although dogs are known to have been present in some locations in coastal and highland South America before European contact [21], there is no such evidence for the upper Marañón, where the Aguaruna live. More generally, dogs are usually assumed to be a Spanish introduction in the Amazon basin [22]. If dog medicines represent a fairly recent domain of knowledge for the Aguaruna, it would seem reasonable to assume that this domain is highly derived from Aguaruna ethnomedicine in general. Accordingly, this research tests the following hypotheses: H1 -- Plants that the Aguaruna use to treat dogs will be the same plants that they use to treat people and H2 -- Plants that are used to treat both people and dogs will be used for the same illnesses in both cases.

Methods

Some preliminary work for this project was carried out in 2004, in the Peruvian department of Amazonas, in the Aguaruna communities of Bajo Cachiaco and Wichim, on the Nieva and upper Marañón rivers, respectively (Figure 2). The main portion of the study took place in the same two communities during fall, 2007. Study communities are in the eastern foothills of the Andes, at elevations range from 230 m to 500 m above sea level, with nearby mountains up to 1000 m or so [23]. The sites include tropical wet forest and premontane tropical rainforest [24]. Both participating communities have a largely subsistence based economy involving swidden horticulture and supplemented extensively by raising of livestock, gathering of wild plants, fishing and hunting of birds and game [25].
Figure 2

Map of the study area.

Nine Aguaruna informants (eight men and one woman) took part in interviews and two Aguaruna field assistants worked with me to further clarify and add to those data. I obtained verbal prior informed consent (PIC) from each participant, and the research followed ethical guidelines adopted by the American Anthropological Association [26].

For each interview, I obtained a freelist of relevant plants by asking 'Wait aneasam adaikata ashi ikamnum ayau yawaa jakui tsuamatai'. -- 'Please tell me all the plants you know that are good for treating sickness in dogs.' Informants mentioned 34 plants total. One person also described several (unidentified) species of wasp larvae. The average freelist had nine plants. For each plant named, I asked informants to describe the canine illnesses or conditions it is used to treat and the preparation method, including part used and route of ingestion. I also asked the same questions regarding any uses for people. I gained additional information about dog medicines and hunting practices in informal conversations with community members and by accompanying them during hunting trips in the forest. Botanical voucher specimens were collected for 29 plants. These were deposited in the herbarium of the Universidad Nacional Mayor San Marcos. Ethnobotanical data from Berlin [27] and collaborators helped to clarify the botanical identity of four additional species, while another remains uncollected. Finally, one plant name corresponds to mosses in general, so no collection was made.

Results and Discussion

Informants mentioned 34 plants, corresponding to nineteen botanical families, given to dogs to improve their hunting ability or to treat illness. I will discuss plants of the former category in the first subsection. The second subsection deals with five types of digestive problems, while the last discusses treatment for ten miscellaneous illnesses.

Medicines for Improving Hunting Ability

The most common reason for giving dogs plant-based preparations was kuntinu shiig maatitusan --'in order to hunt animals well' (Table 1). Some plants in this category are placed in the dog's nose and mouth to clean out solid white mucous deposits and heavy saliva that hinder their ability to smell game animals (Figure 3). Many of these are strong smelling species in the Bignoniaceae, Lauraceae, Piperaceae and Zingiberaceae. Aguaruna hunting dogs tend to suffer from ant and wasp bites that cause their eyes to cloud over, making their sense of smell all the more essential for finding animals. Informants also stated that dogs can lose their sense of smell, if someone lets chickens eat a piece of meat from any animal hunted by dogs.
Figure 3

Ampagpag ( Piper sp.) being administered nasally to improve hunting ability.

Table 1

Plants used to improve hunting ability

Family

Species

Vouch.

Aguaruna Name

Parts Used

Administration Method

SUPa

Acanthaceae

not determined

J305

tsumbaik

roots, leaves

fed

y-

Apocynaceae

Tabernaemontana sananho Ruiz & Pav

J291

kunakip

bark, roots

inhaled in mouth, nose, fed

y-

Araceae

Caladium sp.

J297

ushu

leaves

fed

n

Araceae

Dracontium sp.

J293

uchi santanik

roots

fed

n

Bignoniaceae

Mansoa sp.

J298

kaep

leaves, roots, bark, stem tips

inhaled in mouth, nose, fed

y+

Cyperaceae

Cyperus sp.

J296

yawaa pijipij

roots

fed

n

Lamiaceae

not determined

J299

chiujip

leaves

fed

y+

Lauraceae

Nectandra cuneatocordata Mez

J171

mantaga

roots

inhaled in mouth, nose

n

Lecythidaceae

Couroupita subsessilis Pilg.

J68

shishim

bark

inhaled in mouth, nose

y+

Piperaceae

Piper sp.

J294

ampagpag

roots, leaves

inhaled in mouth, nose, fed

y+

Piperaceae

Piper sp.

J320

shishig

leaves

fed

n

Zingiberaceae

not determined

J317

chiag

leaves

inhaled in mouth

n

-

uncollected

-

chijum

leaves

fed

y-

-

larvae of various wasps

-

  

fed

n

a SUP = same use for people, 'n' indicates a plant use unique to dogs, 'y-' indicates a use common to dogs and people, but with a differing route of administration for each, 'y+' indicates a plant used for the same illness and administered in the same way for both dogs and people same way for both dogs and people

Other plants in this category are stimulating and are fed to dogs, or mixed in with their normal food. The plants kaep(Mansoa sp.) and kunakip(Tabernaemontana sananho) are a noteworthy combination, because they are said to be waimatai-- 'vision producing.' Human hunters also ingest this same mix. The Matsigenka of the southern Peruvian Amazon also give dogs preparations with Mansoa species, but do so for different reasons. They say that the strong odor of the plant is similar to the musky smell of peccaries, a favoured game animal [14].

One Aguaruna informant said that the strongly psychoactive baikua(Brugmansia sp.) can be given to dogs in an enema so that they will have visions of the animals they will kill. Other psychoactives that play an important role in Aguaruna culture include datem(Banisteriopsis spp.) and tsaag(Nicotiana spp.) [28], but those were not mentioned among plants given to dogs.

A few plants in this category are not given to people for any illness or condition. Those are uchi santanik(Dracontium sp.), ushu(Caladium sp.), chiujip(an undetermined Lamiaceae) and yawaa pijipij(Cyperus sp.). Im Thurn [15] describes a similar use of Caladium species as beenas or hunting charms fed to dogs among Carib speakers of Guiana. Aguaruna informants recognize ten or so different folk species of pijipij(Cyperus sp.). Most serve to treat specific illnesses in people. Only yawaa'dog' pijipijis specifically for dogs. One person also mentioned chigki'bird' chiujip, a folk species of that plant given only to people to help them hunt birds. To prevent dogs from being afraid of the animals they hunt, they are tied up and fed larvae of several unidentified wasp species.

Gastrointestinal Illnesses

Gastrointestinal illnesses are a common problem for both people and animals (Table 2). Informants distinguish between ijag-- 'diarrhea' and shiip-- 'mucousy or bloody diarrhea.' The later is also associated with parasitic amoebas [29]. The fact that different plants are used to treat ijagand shiipfurther demonstrates that the two are distinct categories. Nampich-- 'roundworms' are also a common ailment for both dogs and people. The most common treatment is the crushed root of ampagpag(Piper sp.). Like pijipij, more than one variety of ampagpagis recognized and the one used to treat dogs is called yawaa'dog' ampagpag. It is identified by cutting a piece of root and tasting for a distinct spiciness.
Table 2

Plants used for digestive illnesses

Illness

Family

Species

Vouch.a

Aguaruna Name

Parts Used

Administration Method

SUPb

diarrhea

Euphorbiaceae

Croton lechleri Müll. Arg.

J302

ujushnum

bark

enema

n

 

Solanaceae

Capsicum sp.

J333

jima

fruits

fed

y+

 

Zingiberaceae

Zingiber officinale Roscoe

J304

imutai ajeg

bark

inhaled in mouth

y-

mucousy diarrhea

Apocynaceae

Himatanthus sucuuba (Spruce ex Müll. Arg.) Woodson

J201

shipitna

bark

enema

y+

 

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

fed

y+

 

Meliaceae

Guarea macrophylla ssp. pendulispica (C. DC.) T.D. Pennington

J74

bichauj

bark

enema

y+

lack of appetite

Apocynaceae

Tabernaemontana sananho Ruiz & Pav.

J291

kunakip

bark

fed

n

 

Bignoniaceae

Mansoa sp.

J298

kaep

bark

inhaled in mouth

n

 

Cyperaceae

Scleria sp.

J301

kujigkin

leaves

fed

n

 

Euphorbiaceae

Croton lechleri Müll. Arg.

J302

ujushnum

sap, bark

fed

n

 

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

fed

y+

 

Meliaceae

Cedrela odorata L.

J67

seetuj

bark

inhaled in mouth

n

 

Moraceae

Ficus sp.

J328

uji

bark

fed

n

 

Zingiberaceae

Zingiber officinale

J304

imutai ajeg

roots

inhaled in mouth

y-

stomach ache

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

fed

n

 

Solanaceae

Capsicum sp.

J333

jima

fruits

fed

n

worms

Apocynaceae

Himatanthus sucuuba (Spruce ex Müll. Arg.) Woodson

J201

shipitna

bark

enema

y+

 

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

fed

y+

 

Moraceae

Ficus sp.

J328

uji

bark, sap

fed

y-

 

Moraceae

Ficus maxima Mill.

K253

wampu

sap

fed

y+

 

Piperaceae

Piper sp.

J294

ampagpag

roots

inhaled in mouth, nose, fed

y-

a Collection numbers preceded by J indicate my own collections. K indicates a collection made by Rubio Kayap, deposited at the Missouri Botanical Garden, in St. Luis Missouri.

b SUP = same use for people, 'n' indicates a plant use unique to dogs, 'y-' indicates a use common to dogs and people, but with a differing route of administration for each, 'y+' indicates a plant used for the same illness and administered in the same way for both dogs and people

People also mentioned the more generic categories wake najamamu-- 'stomach ache' and yujumak shiig yuachu-- 'not eating well' as common canine problems. Most remedies in this category are intentionally fed to dogs, but people said dogs will seek out a sedge kujigkin(Scleria sp.) on their own, when they feel sick to their stomach. This observation relates to another important body of ethnoveterinary medicine, that of zoopharmacology, the study of apparent cases of self medication among animals [8, 9].

Not surprisingly, the oral route is most common for digestive illnesses. However, some medicines in this group are given as enemas. For many bioactive compounds, enemas are an as effective a method of absorption as the oral route, with the added advantage of avoiding nausea [30].

Miscellaneous Illnesses

Table 3 lists a variety of other illnesses mentioned that do not fit into the above two categories. One of these, called yawaa jati-- 'dog sickness,' or yawaa sugkuji-- 'dog flu' was described as a communicable and potentially fatal disease that is unique to dogs. The symptoms include runny nose, fever and lack of appetite. The most commonly mentioned remedies for yawaa jatiare bakaij(Hura crepitans) and shishim(Couroupita subsessilis). Dogs also suffer snake bites or scorpion stings while hunting. Both are treated with the clear caustic sap of bakaij. One must be careful not to get the liquid in the eyes, since it can damage them. Bites from ants and wasps in the eyes can be treated with juice from the stems of tiig(Cyclanthus bipartitus). The sap of ujushnum(Croton lechleri) is used to treat anemia.
Table 3

Plants used for miscellaneous illnesses

Illness

Family

Species

Vouch.a

Aguaruna Name

Parts Used

Administration Method

SUPb

dog flu

Euphorbiaceae

Croton lechleri Müll. Arg.

J302

ujushnum

sap

fed

n

 

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

fed

n

 

Lecythidaceae

Couroupita subsessilis Pilg.

J68

shishim

bark

inhaled in mouth, fed

n

 

Meliaceae

Cedrela odorata L.

J67

seetuj

bark

inhaled in mouth

n

snake bite

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

topical

y+

scorpion sting

Euphorbiaceae

Hura crepitans L.

J415

bakaij

sap

topical

n

ant or wasp sting in eye

Cyclanthaceae

Cyclanthus bipartitus Poit. ex A. Rich

B1949

tiig

stem

topical

n

anemia

Euphorbiaceae

Croton lechleri Müll. Arg.

J302

ujushnum

sap

fed

y+

dermatitis

Apocynaceae

Tabernaemontana sananho Ruiz & Pav.

J291

kunakip

sap

topical

y+

 

Commelinaceae

not determined

J303

bicha

leaves

topical

y+

 

Rutaceae

Citrus sp.

J407

yumug

fruit juice

bath

y+

 

Solanaceae

Solanum sp.

J418

kukuna

fruit juice

bath

y+

lice

Fabaceae

Lonchocarpus utilis A.C. Sm.

J419

timu

root

bath

n

cuts

Araceae

Philodendron sp.

B1848

chuju daek

stem tips

topical

y+

 

Arecaceae

not determined

Bo94

kampanak

leaves

topical

y+

 

Euphorbiaceae

Croton lechleri Müll. Arg.

J302

ujushnum

sap

topical

y+

 

-

various mosses

-

juu

leaves

topical

y+

swelling

Fabaceae

Ormosia cf. coccinea (Aubl.) Jacks.

J71

tajep

bark

topical

y+

 

Piperaceae

Piper sp.

J23

untuntup

leaves

topical

y+

witchcraft

Cyperaceae

Scleria sp.

J301

kujigkin

leaves

fed

n

 

Zingiberaceae

Zingiber officinale

J310

tunchi ajeg

root

fed, enema

y-

a Collection numbers preceded by J indicate my own collections. Bo indicates a collection made by J.S. Boster, B indicates Brent Berlin. deposited at the Missouri Botanical Garden, in St. Luis Missouri.

b SUP = same use for people, 'n' indicates a plant use unique to dogs, 'y-' indicates a use common to dogs and people, but with a differing route of administration for each, 'y+' indicates a plant used for the same illness and administered in the same way for both dogs and people

Wounds, sprains and skin infections are common problems for hunting dogs. The illness tejemachcorresponds to dermatitis and stems from fungal infections in some cases [29]. It is treated with bathes or topical application of medicinal plants. Dogs with lice are treated with the root of the common fish poison timu(Lonchocarpus utilis), but that is considered too strong for people.

Dogs can be the victims of witchcraft, just like humans. Despite the fact that ajeg-- 'ginger' (Zingiber officinale) is not native to Amazonia, the Aguaruna recognize ten or so folk species of the plant. Shepard (pers. comm.) has suggested that the Aguaruna may consider Zingiber to be an analogue of the native genus Cyperus, also with aromatic tubers. One folk species of ginger, tunchi'witch' ajeg, serves specifically to treat witchcraft in both people and dogs. Other folk species are said to have different medicinal purposes. Informants noted that the folk species are morphologically indistinguishable, nor was I able to find any physiological distinction. Women who plant them simply have to remember where in their field they put each one.

Dogs are normally fed manioc and leftover bones and scraps. However, for the Aguaruna, taking medicine often includes some kind of restrictive diet, where certain foods and activities are forbidden for a period of time varying with the seriousness of the illness. When ill, dogs are made to avoid hot foods, roasted manioc and fish killed with timu(Lonchocarpus utilis) fish poison. A boy or unmarried young man must give the dog the remedy.

Overall, the results give fairly strong support to the first research hypothesis, that plants used to treat dogs will be the same ones used to treat people. Out of the 35 species given to dogs, 29 (83%) are also given to humans for some purpose. The remaining six, yawaa pijipij(Cyperus sp.), kujigkin(Scleria sp.), uchi santanik(Dracontium sp.), ushu(Caladium sp.), chiujip(an unidentified Lamiaceae) and timu(Lonchocarpus utilis) are unique to canine medicine. The second study hypothesis, that plants used to treat both people and dogs will be used for the same illnesses for both is only partly supported. Informants described a total of 58 uses for the 35 plants. For 31 of those (53%), the same plant is used to treat the same illness in both people and dogs. In 25 out of 58 cases (43%), plants used to treat a particular illness for both dogs and people are administered by the same route for both. These results suggest that Aguaruna ethnoveterinary medicine is, at least partly, a separate cognitive domain from ethnomedicine.

Examining the data in Tables 1, 2 and 3, three trends appear to explain most of the differences in how plants are used for treating dogs and people. First of all, some illness categories apply only to dogs. People do not contract yawaa sugkuji-- 'dog flu,' nor (with the unfortunate exception of the author) get ant stings on their eyeballs. The category yujumak shiig yuachu-- 'not eating well' also appears to be much more salient for dogs. Taking out those three illnesses, the percent agreement between canine and human uses increases to 66%. The second trend is that dogs sometimes take medicines that are considered too strong for people. Dogs (but not people) with lice are given the fish poison timu(Lonchocarpus utilis). The caustic sap of bakaij(Hura crepitans) is also used for more conditions for dogs. Thirdly, there is simply a greater variety of medicines for dogs to improve their hunting than for people. In this area, canine medicine comes closest to being a separate cognitive domain. This trend differs from some other Amazonian societies. The Matsigenka, for example, have a larger number of plants for improving the hunting ability of people than for that of dogs (Shepard, G pers. comm.).

Aguaruna canine ethnoveterinary medicine shows some important similarities with that reported for other Amazonian societies. First of all, the use of ants and wasps in some form to improve dogs' hunting ability appears to be widespread. The specific method of preparation differs cross-culturally. While the Aguaruna feed wasp larvae to dogs, Shepard [13] writes that the Matsigenka mix ants and wasps with other ingredients in preparations taken nasally. Hunters in Trinidad [12] put a wasp species with other ingredients in rum and use that in stimulating bath. Im Thurn [15] notes that hunters in Guiana sometimes made their dogs inhale smoke of a burning mixture of substances, including ants and wasps. Presumably, such practices are symbolic, intended to give dogs the same fierceness that the ant and wasp species are thought to possess. Posey [31] mentions that Kayapó boys in Brazil boys were stung by painful Paraponera clavata ants in a coming of age ceremony and that warriors would seek to be stung by the aggressive social wasps Polybia liliacae. Balée [32] has also noted a cross-cultural commonality of ant stings in initiations among speakers of languages in the Tupi Guaraní family.

The nasal ingestion route is another cross-cultural commonality. As in Trinidad [12], the purpose for the Aguaruna is to clean out dogs' noses to help them smell animals better. Shepard [13], on the other hand, speculates that strong-smelling plants administered in this way may be similar to the odor of game animals.

Both the Matsigenka [13] and the Aguaruna use psychoactive preparations to make dogs better hunters. The former give dogs Brugmansia, Brunfelsia and Juanulloa (Solanaceae). This fits with the emphasis that both cultures place on psychoactive plants as a means of heightening the senses.

Lans et al [12] report some broad categories of treatment from Trinidad that I did not find among the Aguaruna. I saw no parallel, for example, for the stimulating plant bathes that people give dogs, nor for the remedies designed to keep dogs from chasing after forest spirits instead of real animals.

Conclusion

The domain of canine ethnoveterinary medicine appears to be significantly influenced by Aguaruna ethnomedicine in general. However, some plants and treatments are unique to dogs, especially in the area of improving hunting ability. Striking cross cultural similarities in canine medicine between the Aguaruna and other Amazonian cultures raise the question of the relative contribution of independent discovery vs. diffusion in the creation of this knowledge, which appears to postdate European contact [21, 22].

Future research into Aguaruna canine ethnoveterinary medicine could explore in more detail how dogs' bodies are thought to function, specifically asking whether they have the same internal organs and physiological processes as people. With this background, one could ask more detailed questions about the pathophysiology of diseases. The fact that the Aguaruna give dogs potentially mind-altering plants to make them better hunters also raises questions about how the Aguaruna view the subjective sensory experiences of dogs [16]. Additionally, more work could be done specifically on the human side of hunting [14, 33], looking at magical remedies that the Aguaruna themselves take to improve their hunting ability.

Declarations

Acknowledgements

I would like to thank Brent Berlin, Elois Ann Berlin and Glenn Shepard for their inspiration and example. Various people in the herbarium of the Universidad Nacional Mayor de San Marcos (UNMSM), in Lima, kindly helped me identify botanical specimens. These include Joaquina Albán, Hamilton Beltrán, Severo Baldeón, Franco Mellado, Mirbel Epiquien and Irayda Salinas. I also appreciate the helpful comments of two anonymous reviewers. Most of all, I would like to thank the people of the communities of Bajo Cachiaco and Wichim, where this research took place. Martín Reátegui, Nestor Reátegui, Gregorio Reátegui and their parents were very helpful in their assistance with coordinating this research. Shugki, Ashambai, Agustin, Torres, Quirrubin, Rebino, Felipe, Samuel.

Authors’ Affiliations

(1)
COPIAAN (Comité de Productores Indígenas Awajún de Alto Nieva)

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© Jernigan; licensee BioMed Central Ltd. 2009

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