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Author |
Hare, B.; Brown, M.; Williamson, C.; Tomasello, M. |
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Title |
The domestication of social cognition in dogs |
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Journal Article |
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Year |
2002 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
298 |
Issue |
5598 |
Pages |
1634-1636 |
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Keywords |
Animals; *Animals, Domestic; *Behavior, Animal; *Cognition; *Cues; *Dogs; Food; Humans; Memory; Pan troglodytes; *Social Behavior; Species Specificity; Vision; Wolves |
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Abstract |
Dogs are more skillful than great apes at a number of tasks in which they must read human communicative signals indicating the location of hidden food. In this study, we found that wolves who were raised by humans do not show these same skills, whereas domestic dog puppies only a few weeks old, even those that have had little human contact, do show these skills. These findings suggest that during the process of domestication, dogs have been selected for a set of social-cognitive abilities that enable them to communicate with humans in unique ways. |
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Department of Anthropology, Harvard University, Cambridge, MA 02138, USA. bhare@fas.harvard.edu |
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1095-9203 |
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PMID:12446914 |
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no |
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Call Number |
refbase @ user @ |
Serial |
595 |
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Author |
Zucca, P.; Antonelli, F.; Vallortigara, G. |
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Title |
Detour behaviour in three species of birds: quails (Coturnix sp.), herring gulls (Larus cachinnans) and canaries (Serinus canaria) |
Type |
Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
2 |
Pages |
122-128 |
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Keywords |
Animals; *Avoidance Learning; *Birds; Canaries; Charadriiformes; Coturnix; *Discrimination Learning; Orientation; *Space Perception; *Spatial Behavior; Species Specificity |
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Abstract |
Detour behaviour is the ability of an animal to reach a goal stimulus by moving round any interposed obstacle. It has been widely studied and has been proposed as a test of insight learning in several species of mammals, but few data are available in birds. A comparative study in three species of birds, belonging to different eco-ethological niches, allows a better understanding of the cognitive mechanism of such detour behaviour. Young quails (Coturnix sp.), herring gulls (Larus cachinnans) and canaries (Serinus canaria), 1 month old, 10-25 days old and 4-6 months old, respectively, were tested in a detour situation requiring them to abandon a clear view of a biologically interesting object (their own reflection in a mirror) in order to approach that object. Birds were placed in a closed corridor, at one end of which was a barrier through which the object was visible. Four different types of barrier were used: vertical bar, horizontal bar, grid and transparent. Two symmetrical apertures placed midline in the corridor allowed the birds to adopt routes passing around the barrier. After entering the apertures, birds could turn either right or left to re-establish social contact with the object in the absence of any local sensory cues emanating from it. Quails appeared able to solve the task, though their performance depended on the type of barrier used, which appeared to modulate their relative interest in approaching the object or in exploring the surroundings. Young herring gulls also showed excellent abilities to locate spatially the out-of-view object, except when the transparent barrier was used. Canaries, on the other hand, appeared completely unable to solve the detour task, whatever barrier was in use. It is suggested that these species differences can be accounted for in terms of adaptation to a terrestrial or aerial environment. |
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Address |
Laboratory of Animal Cognition and Comparative Neuroscience, Department of Psychology, University of Trieste, Via S. Anastasio 12, 34100, Trieste, Italy. zucca@units.it |
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1435-9448 |
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PMID:15449104 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2506 |
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Author |
Bjorklund, D.F.; Yunger, J.L.; Bering, J.M.; Ragan, P. |
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Title |
The generalization of deferred imitation in enculturated chimpanzees (Pan troglodytes) |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
1 |
Pages |
49-58 |
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Keywords |
Age Factors; Animals; Behavior, Animal; Humans; *Imitative Behavior; Pan troglodytes/physiology/*psychology; Parenting; Species Specificity |
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Abstract |
Deferred imitation of object-related actions and generalization of imitation to similar but not identical tasks was assessed in three human-reared (enculturated) chimpanzees, ranging in age from 5 to 9 years. Each ape displayed high levels of deferred imitation and only slightly lower levels of generalization of imitation. The youngest two chimpanzees were more apt to generalize the model's actions when they had displayed portions of the target behaviors at baseline, consistent with the idea that learning is more likely to occur when working within the “zone of proximal development.” We argue that generalization of imitation is the best evidence to date of imitative learning in chimpanzees. |
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Address |
Department of Psychology, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431-0991, USA. dbjorklund@fau.edu |
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1435-9448 |
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Notes |
PMID:11957402 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2610 |
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Author |
Keay, J.M.; Singh, J.; Gaunt, M.C.; Kaur, T. |
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Title |
Fecal glucocorticoids and their metabolites as indicators of stress in various mammalian species: a literature review |
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Journal Article |
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Year |
2006 |
Publication |
Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians |
Abbreviated Journal |
J Zoo Wildl Med |
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Volume |
37 |
Issue |
3 |
Pages |
234-244 |
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Keywords |
Animals; *Animals, Wild/metabolism; Chromatography, High Pressure Liquid/methods/veterinary; Circadian Rhythm; Conservation of Natural Resources; *Ecosystem; Feces/*chemistry; Glucocorticoids/*analysis/metabolism; Humans; Seasons; Species Specificity; Specimen Handling/methods/veterinary; Stress, Psychological/*metabolism |
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Abstract |
Conservation medicine is a discipline in which researchers and conservationists study and respond to the dynamic interplay between animals, humans, and the environment. From a wildlife perspective, animal species are encountering stressors from numerous sources. With the rapidly increasing human population, a corresponding increased demand for food, fuel, and shelter; habitat destruction; and increased competition for natural resources, the health and well-being of wild animal populations is increasingly at risk of disease and endangerment. Scientific data are needed to measure the impact that human encroachment is having on wildlife. Nonbiased biometric data provide a means to measure the amount of stress being imposed on animals from humans, the environment, and other animals. The stress response in animals functions via glucocorticoid metabolism and is regulated by the hypothalamic-pituitary-adrenal axis. Fecal glucocorticoids, in particular, may be an extremely useful biometric test, since sample collection is noninvasive to subjects and, therefore, does not introduce other variables that may alter assay results. For this reason, many researchers and conservationists have begun to use fecal glucocorticoids as a means to measure stress in various animal species. This review article summarizes the literature on many studies in which fecal glucocorticoids and their metabolites have been used to assess stress levels in various mammalian species. Variations between studies are the main focus of this review. Collection methods, storage conditions, shipping procedures, and laboratory techniques utilized by different researchers are discussed. |
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Address |
Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 0442 Duck Pond Drive, Blacksburg, Virginia 24061, USA |
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1042-7260 |
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Notes |
PMID:17319120 |
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no |
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Call Number |
refbase @ user @ |
Serial |
616 |
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Author |
Blazyczek, I.; Hamann, H.; Deegen, E.; Distl, O.; Ohnesorge, B. |
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Title |
Retrospective analysis of 50 cases of guttural pouch tympany in foals |
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Journal Article |
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Year |
2004 |
Publication |
The Veterinary Record |
Abbreviated Journal |
Vet. Rec. |
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Volume |
154 |
Issue |
9 |
Pages |
261-264 |
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Keywords |
Animals; Female; Germany/epidemiology; Horse Diseases/*surgery; Horses; Male; Pharyngeal Diseases/epidemiology/surgery/*veterinary; Retrospective Studies; Severity of Illness Index; Species Specificity |
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Abstract |
Between 1994 and 2001, guttural pouch tympany was diagnosed in 51 foals; there were approximately three times as many fillies as colts, of Arabian, different German warmblood breeds and Western horse breeds. There were significantly more Arabian and paint horse foals than expected in comparison with the breed distribution of the foals hospitalised at the Clinic for Horses. The foals' breed and sex did not influence the age of onset, the type and severity of the clinical signs or the recurrence rate. A surgical laser technique was used on 50 of the foals; in 35 cases only one surgical treatment was necessary, in seven cases a second operation was required during the foal's initial period of hospitalisation, and in eight cases a second operation was performed during a second period of hospitalisation. Long-term follow-up information was obtained for 44 of the 50 treated horses; 24 of them were under two years of age and 20 were over two years of age. In six horses, no follow-up information was available. Four horses were euthanased for reasons unrelated to the condition or its treatment. The horses over two years of age were in training or were being used for competitions in dressage or jumping or for breeding purposes, and in only one of them was an adventitious respiratory noise reported. All the horses up to two years of age were reported to be healthy. |
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Address |
Institute of Animal Breeding and Genetics, School of Veterinary Medicine Hannover, Buenteweg 17p, D-30559 Hannover, Germany |
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0042-4900 |
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PMID:15029964 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3719 |
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Author |
Whiten, A.; Goodall, J.; McGrew, W.C.; Nishida, T.; Reynolds, V.; Sugiyama, Y.; Tutin, C.E.; Wrangham, R.W.; Boesch, C. |
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Title |
Cultures in chimpanzees |
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Journal Article |
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Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
399 |
Issue |
6737 |
Pages |
682-685 |
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Keywords |
Animals; *Behavior, Animal; Cognition; *Culture; Humans; Pan troglodytes/*physiology; Species Specificity |
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Abstract |
As an increasing number of field studies of chimpanzees (Pan troglodytes) have achieved long-term status across Africa, differences in the behavioural repertoires described have become apparent that suggest there is significant cultural variation. Here we present a systematic synthesis of this information from the seven most long-term studies, which together have accumulated 151 years of chimpanzee observation. This comprehensive analysis reveals patterns of variation that are far more extensive than have previously been documented for any animal species except humans. We find that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted. Among mammalian and avian species, cultural variation has previously been identified only for single behaviour patterns, such as the local dialects of song-birds. The extensive, multiple variations now documented for chimpanzees are thus without parallel. Moreover, the combined repertoire of these behaviour patterns in each chimpanzee community is itself highly distinctive, a phenomenon characteristic of human cultures but previously unrecognised in non-human species. |
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Address |
Scottish Primate Research Group, School of Psychology, University of St Andrews, UK |
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0028-0836 |
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Notes |
PMID:10385119 |
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no |
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Call Number |
refbase @ user @ |
Serial |
742 |
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Author |
Gallup, G.G.J. |
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Title |
Do minds exist in species other than our own? |
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Journal Article |
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Year |
1985 |
Publication |
Neuroscience and Biobehavioral Reviews |
Abbreviated Journal |
Neurosci Biobehav Rev |
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Volume |
9 |
Issue |
4 |
Pages |
631-641 |
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Keywords |
Animals; Awareness; *Behavior, Animal; Child Psychology; Child, Preschool; *Cognition; Consciousness; Evolution; Humans; Infant; Language; Pan troglodytes; Philosophy; Psychological Theory; Species Specificity |
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Abstract |
An answer to the question of animal awareness depends on evidence, not intuition, anecdote, or debate. This paper examines some of the problems inherent in an analysis of animal awareness, and whether animals might be aware of being aware is offered as a more meaningful distinction. A framework is presented which can be used to make a determination about the extent to which other species have experiences similar to ours based on their ability to make inferences and attributions about mental states in others. The evidence from both humans and animals is consistent with the idea that the capacity to use experience to infer the experience of others is a byproduct of self-awareness. |
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0149-7634 |
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PMID:4080281 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2808 |
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Author |
Horowitz, A.C. |
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Title |
Do humans ape? Or do apes human? Imitation and intention in humans (Homo sapiens) and other animals |
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Journal Article |
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Year |
2003 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
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Volume |
117 |
Issue |
3 |
Pages |
325-336 |
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Keywords |
Adolescent; Adult; Animals; *Appetitive Behavior; Attention; Child, Preschool; Concept Formation; Female; Humans; *Imitative Behavior; Male; Motivation; Pan troglodytes/*psychology; *Problem Solving; *Psychomotor Performance; Reaction Time; Species Specificity |
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Abstract |
A. Whiten, D. M. Custance, J.-C. Gomez, P. Teixidor, and K. A. Bard (1996) tested chimpanzees' (Pan troglodytes) and human children's (Homo sapiens) skills at imitation with a 2-action test on an “artificial fruit.” Chimpanzees imitated to a restricted degree; children were more thoroughly imitative. Such results prompted some to assert that the difference in imitation indicates a difference in the subjects' understanding of the intentions of the demonstrator (M. Tomasello, 1996). In this experiment, 37 adult human subjects were tested with the artificial fruit. Far from being perfect imitators, the adults were less imitative than the children. These results cast doubt on the inference from imitative performance to an ability to understand others' intentions. The results also demonstrate how any test of imitation requires a control group and attention to the level of behavioral analysis. |
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Department of Cognitive Science, University of California, San Diego, CA, USA. ahorowitz@crl.ucsd.edu |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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Notes |
PMID:14498809 |
Approved |
yes |
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Call Number |
refbase @ user @ |
Serial |
736 |
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Author |
Kaminski, J.; Call, J.; Tomasello, M. |
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Title |
Body orientation and face orientation: two factors controlling apes' behavior from humans |
Type |
Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
7 |
Issue |
4 |
Pages |
216-223 |
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Keywords |
Animals; *Attention; *Behavior, Animal; Cognition; *Concept Formation; Face; Facial Expression; Female; Fixation, Ocular; Hominidae/*psychology; Humans; Male; *Nonverbal Communication; *Orientation; Pan paniscus/psychology; Pan troglodytes/psychology; Pongo pygmaeus/psychology; *Posture; Social Perception; Species Specificity |
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Abstract |
A number of animal species have evolved the cognitive ability to detect when they are being watched by other individuals. Precisely what kind of information they use to make this determination is unknown. There is particular controversy in the case of the great apes because different studies report conflicting results. In experiment 1, we presented chimpanzees, orangutans, and bonobos with a situation in which they had to request food from a human observer who was in one of various attentional states. She either stared at the ape, faced the ape with her eyes closed, sat with her back towards the ape, or left the room. In experiment 2, we systematically crossed the observer's body and face orientation so that the observer could have her body and/or face oriented either towards or away from the subject. Results indicated that apes produced more behaviors when they were being watched. They did this not only on the basis of whether they could see the experimenter as a whole, but they were sensitive to her body and face orientation separately. These results suggest that body and face orientation encode two different types of information. Whereas face orientation encodes the observer's perceptual access, body orientation encodes the observer's disposition to transfer food. In contrast to the results on body and face orientation, only two of the tested subjects responded to the state of the observer's eyes. |
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Max Planck Institute for Evolutionary Anthropology, Deutscher Plaz 6, 04103 Leipzig, Germany. kaminski@eva.mpg.de |
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1435-9448 |
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Notes |
PMID:15034765 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2538 |
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Permanent link to this record |
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Author |
Palme, R.; Rettenbacher, S.; Touma, C.; El-Bahr, S.M.; Mostl, E. |
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Title |
Stress hormones in mammals and birds: comparative aspects regarding metabolism, excretion, and noninvasive measurement in fecal samples |
Type |
Journal Article |
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Year |
2005 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1040 |
Issue |
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Pages |
162-171 |
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Keywords |
Adrenal Glands/chemistry/metabolism; Animals; Birds; Catecholamines/analysis/chemistry/*metabolism; Feces/*chemistry; Glucocorticoids/analysis/chemistry/*metabolism; Hormones/analysis/metabolism; Mammals; Species Specificity; Stress/*metabolism |
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Abstract |
A multitude of endocrine mechanisms are involved in coping with challenges. Front-line hormones to overcome stressful situations are glucocorticoids (GCs) and catecholamines (CAs). These hormones are usually determined in plasma samples as parameters of adrenal activity and thus of disturbance. GCs (and CAs) are extensively metabolized and excreted afterwards. Therefore, the concentration of GCs (or their metabolites) can be measured in various body fluids or excreta. Above all, fecal samples offer the advantages of easy collection and a feedback-free sampling procedure. However, large differences exist among species regarding the route and time course of excretion, as well as the types of metabolites formed. Based on information gained from radiometabolism studies (reviewed in this paper), we recently developed and successfully validated different enzyme immunoassays that enable the noninvasive measurement of groups of cortisol or corticosterone metabolites in animal feces. The determination of these metabolites in fecal samples can be used as a powerful tool to monitor GC production in various species of domestic, wildlife, and laboratory animals. |
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Address |
Institute of Biochemistry, Department of Natural Sciences, University of Veterinary Medicine, Vienna, Austria. rupert.palme@vu-wien.ac.at |
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ISSN |
0077-8923 |
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Notes |
PMID:15891021 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4083 |
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Permanent link to this record |