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Author |
Brannon, E.M.; Terrace, H.S. |
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Title |
Representation of the numerosities 1-9 by rhesus macaques (Macaca mulatta) |
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Journal Article |
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Year |
2000 |
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Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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26 |
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1 |
Pages |
31-49 |
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Animals; *Cognition; Macaca mulatta/*psychology; *Mathematics; Perception; Reaction Time |
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Three rhesus monkeys (Macaca mulatta) were trained to respond to exemplars of 1, 2, 3, and 4 in an ascending, descending, or a nonmonotonic numerical order (1-->2-->3-->4, 4-->3-->2--1, 3-->1-->4-->2). The monkeys were then tested on their ability to order pairs of the novel numerosities 5-9. In Experiment 1, all 3 monkeys ordered novel exemplars of the numerosities 1-4 in ascending or descending order. The attempt to train a nonmonotonic order (3-->1-->4-->2) failed. In Experiment 2A, the 2 monkeys who learned the ascending numerical rule ordered pairs of the novel numerosities 5-9 on unreinforced trials. The monkey who learned the descending numerical rule failed to extrapolate the descending rule to new numerosities. In Experiment 2B all 3 monkeys ordered novel exemplars of pairs of the numerosities 5-9. Accuracy and latency of responding revealed distance and magnitude effects analogous to previous findings with human participants (R. S. Moyer & T. K. Landaeur, 1967). Collectively these studies show that monkeys represent the numerosities 1-9 on at least an ordinal scale. |
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Department of Psychology, Columbia University, New York, New York 10027, USA. liz@psych.columbia.edu |
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0097-7403 |
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PMID:10650542 |
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Equine Behaviour @ team @ |
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2775 |
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Mitchell, D.; Kirschbaum, E.H.; Perry, R.L. |
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Title |
Effects of neophobia and habituation on the poison-induced avoidance of exteroceptive stimuli in the rat |
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Journal Article |
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Year |
1975 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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1 |
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1 |
Pages |
47-55 |
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Animals; Avoidance Learning/*drug effects; *Awareness; *Cognition; Conditioning, Operant; Feeding Behavior/drug effects; *Habituation, Psychophysiologic; Injections, Intraperitoneal; Lithium/administration & dosage/poisoning; Male; Rats; *Taste; Time Factors; *Visual Perception |
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Two experiments on the role of neophobia in poison-induced aversions to exteroceptive stimuli are reported. In Experiment 1, rats were given either 10 or 25 days of habituation to the test situation prior to conditioning. Those animals with the longer habituation period avoided a complex of novel exteroceptive stimuli while those with the shorter habituation period did not. In Experiment 2 rats initially avoided the more novel of two containers, but gradually came to eat equal amounts from both. A single pairing of toxicosis with consumption from either the novel or the familiar container reinstated the avoidance of the novel container in both cases. The results were discussed in terms of an interaction between habituation and conditioning procedures. It was suggested that previously reported differences between interoceptive and exteroceptive conditioning effects may have been influenced by the differential novelty of the two classes of stimuli in the test situation. It was further suggested that non-contingently poisoned control groups should routinely be included in poison avoidance conditioning studies. |
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0097-7403 |
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PMID:1151289 |
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Equine Behaviour @ team @ |
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2791 |
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Cowell, P.E.; Fitch, R.H.; Denenberg, V.H. |
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Title |
Laterality in animals: relevance to schizophrenia |
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Journal Article |
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Year |
1999 |
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Schizophrenia Bulletin |
Abbreviated Journal |
Schizophr Bull |
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25 |
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1 |
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41-62 |
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Adult; Animals; Cognition; *Disease Models, Animal; Functional Laterality/*physiology; Humans; Language; Motor Activity/physiology; Schizophrenia/*physiopathology |
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Anomalies in the laterality of numerous neurocognitive dimensions associated with schizophrenia have been documented, but their role in the etiology and early development of the disorder remain unclear. In the study of normative neurobehavioral organization, animal models have shed much light on the mechanisms underlying and the factors affecting adult patterns of both functional and structural asymmetry. Nonhuman species have more recently been used to investigate the environmental, genetic, and neuroendocrine factors associated with developmental language disorders in humans. We propose that the animal models used to study the basis of lateralization in normative development and language disorders such as dyslexia could be modified to investigate lateralized phenomena in schizophrenia. |
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Dept. of Human Communication Sciences, University of Sheffield, United Kingdom |
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0586-7614 |
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PMID:10098913 |
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Equine Behaviour @ team @ |
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2827 |
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Duncan, I.J.H.; Petherick, J.C. |
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Proceeding (Paper presented at the Winter Meeting of the Society for Veterinary Ethology, London, Great Britain, 30 November 1988)Cognition: The implications for animal welfare |
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1989 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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24 |
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1 |
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81-1010 |
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Equine Behaviour @ team @ |
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2921 |
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Cordeiro de Sousa, M.; Xavier, N.; Alves da Silva, H.; Souza de Oliveira, M.; Yamamoto, M. |
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Title |
Hand preference study in marmosets ( Callithrix jacchus ) using food reaching tests |
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Journal Article |
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Year |
2001 |
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Primates |
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Primates |
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42 |
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1 |
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57-66 |
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Abstract Hand preference has been investigated in New World primates but the data obtained thus far are controversial. In this study we investigated hand preference in common marmosets,Callithrix jacchus, during the execution of a reaching for food task. We used 46 adult common marmoset males (n=27) and females (n=19) from the Universidade of Rio Grande do Norte colony, both wild and captive-born. To test the hand preference we used a device measuring 10 cm2, with a central hole 1 cm in diameter, to force the animal to use only one hand to reach for food on a food dish located underneath. Each animal was tested 5 times and had to make a maximum of 20 successful attempts per session. A total of 100 successful attempts per animal and 4,600 successful attempts for all animals were recorded during the experiment. Latency and duration of the sessions were measured and we found preference for the use of one of the hands in common marmoset individuals, i.e. 45 of total of 46 animals used significantly more the right or the left hand when performing the task. However no bias at the population level was found. Females born in captivity presented an increase in the duration of latency for the first successful attempt and in the total duration of the test sessions. These findings might be indicating differences associated with a natural tendency for females to be more selective and to spend more time exploring alimentary sources. Additionally, captive-born females may have a constrain in developing cognitive abilities regarding foraging since they have food available during most part of the time. |
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Equine Behaviour @ team @ |
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3149 |
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Kusayama, T.; Bischof, H.-J.; Watanabe, S. |
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Title |
Responses to mirror-image stimulation in jungle crows (Corvus macrorhynchos) |
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Journal Article |
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Year |
2000 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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3 |
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1 |
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61-64 |
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Four jungle crows (Corvus macrorhynchos) were exposed to a mirror placed either vertically or horizontally. The most frequently observed behaviors were pecking at the mirror and wing flapping when looking toward the mirror. These behavior patterns, which were only rarely observed when the mirror was reversed, can be interpreted as aggressive behaviors against a conspecific. The vertical mirror evoked the behaviors more often than the horizontal mirror. The present results suggest that crows perceive their mirror image as an image of a conspecific, not as their own. |
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Equine Behaviour @ team @ |
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3319 |
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Author |
Mullin, M.H. |
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Title |
MIRRORS AND WINDOWS: Sociocultural Studies of Human-Animal Relationships |
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Journal Article |
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1999 |
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Annual Review of Anthropology |
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28 |
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1 |
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201-224 |
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Humans' relationships with animals, increasingly the subject of controversy, have long been of interest to those whose primary aim has been the better understanding of humans' relationships with other humans. Since this topic was last reviewed here, human-animal relationships have undergone considerable reexamination, reflecting key trends in the history of social analysis, including concerns with connections between anthropology and colonialism and with the construction of race, class, and gender identities. There have been many attempts to integrate structuralist or symbolic approaches with those focused on environmental, political, and economic dimensions. Human-animal relationships are now much more likely to be considered in dynamic terms, and consequently, there has been much interdisciplinary exchange between anthropologists and historians. Some research directly engages moral and political concerns about animals, but it is likely that sociocultural research on human-animal relationships will continue to be as much, if not more, about humans. |
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refbase @ user @ |
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3534 |
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Kamil, A.C.; Roitblat, H.L. |
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The Ecology of Foraging Behavior: Implications for Animal Learning and Memory |
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1985 |
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Annual Review of Psychology |
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36 |
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1 |
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141-169 |
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3543 |
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Kraft, C.N.; Urban, N.; Ilg, A.; Wallny, T.; Scharfstadt, A.; Jager, M.; Pennekamp, P.H. |
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[Influence of the riding discipline and riding intensity on the incidence of back pain in competitive horseback riders] |
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Journal Article |
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2007 |
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Sportverletzung Sportschaden : Organ der Gesellschaft fur Orthopadisch-Traumatologische Sportmedizin |
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Sportverletz Sportschaden |
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21 |
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1 |
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29-33 |
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Adolescent; Adult; Aged; Animals; Child; Female; Horses; Humans; Incidence; Low Back Pain/diagnosis/*epidemiology/etiology; Male; Middle Aged; Pain Measurement; Questionnaires; Risk Factors; *Sports/physiology |
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INTRODUCTION: The connection between morphologic changes of the spine and the intensity of training has been assessed for a number of sport activities. The influence of horseback riding on the spine has only rarely been evaluated. The aim of our study was to evaluate to what degree horseback riders suffer from back pain and whether there is an association between this parameter and the category i. e. the intensity of horseback riding. Furthermore we wanted to judge whether riding may have a positive effect on pre-existent back pain. METHODS: 508 horseback riders (63.2 % females; 36.8 % males) competing in either dressage, showjumping or vaulting were interviewed using a questionnaire. Apart from biometric data, the intensity with which riding was performed and the localisation and intensity (VAS) of back pain was assessed. Furthermore, in the case of existing back pain, riders were asked whether different riding disciplines and paces changed the intensity of pain. RESULTS: 300 dressage riders (59.1 %), 188 showjumpers (37.0 %) and 20 vaulters (3.9 %) with an average age of 33.5 Jahre (12 – 77 years) were questioned. The incidence of back pain was 72.5 %. A significant correlation between back pain and riding discipline respectively gender or riding level could not be found. Discrepancies in VAS-score for dressage riders (3.95 +/- 0.13), show jumpers (4.10 +/- 0.16) and vaulters (3.76 +/- 0.5) were marginal and not significant (p > 0.05). Overall 58.7 % resp. 15.2 % reported to have pain in the lumbar i.e cervical spine. Despite the fact that a large fraction of dressage riders claimed to have problems in these spine areas with 57.7 % resp. 68.8 %, this finding was not significant compared to the other riding disciplines. While 61.6 % of dressage riders reported an improvement of their back pain when riding, this was only the case in 40.9 % of show jumpers. CONCLUSION: Compared to the general population, a high incidence of back pain is found among riders. A significant correlation between the intensity of riding or the riding discipline and frequency or severity of back pain could not be found. For riders with pre-existent back pain the pace “walk” seems to have a positive influence on pain intensity. |
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Klinik und Poliklinik fur Orthopadie, Heinrich-Heine-Universitat, Dusseldorf. clayton.kraft@med.uni-duesseldorf.de |
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German |
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Einfluss der Reitdisziplin und -intensitat auf die Inzidenz von Ruckenschmerzen bei Reitsportlern |
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0932-0555 |
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PMID:17385102 |
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Equine Behaviour @ team @ |
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3706 |
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Stock, K.F.; Hamann, H.; Distl, O. |
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Factors associated with the prevalence of osseous fragments in the limb joints of Hanoverian Warmblood horses |
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2006 |
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Veterinary Journal (London, England : 1997) |
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Vet J |
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171 |
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1 |
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147-156 |
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Animals; Body Weight/physiology; Female; Horse Diseases/*epidemiology/genetics/*radiography; Horses; Joint Diseases/epidemiology/genetics/radiography/*veterinary; Male; Pedigree; Prevalence |
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Factors associated with the prevalence of osseous fragments (OF) in fetlock and hock joints were investigated in a population of young Hanoverian Warmblood horses selected for sale at auction from 1991 to 1998. The study was based on results of a standardized radiological examination of 3127 horses. The prevalences of OF in the two joints were significantly dependent on the date, type and quality of the auction, the region of origin and on the anticipated suitability of the horses for dressage and/or show-jumping. The probability of finding OF increased with wither-height. Furthermore, there was a significant association of the individual sire with the prevalence of OF in both fetlock and hock joints, and of the maternal grandsire with the prevalence of OF in the hock joints. Consequently, both non-genetic and genetic parameters should be taken into account in order to reduce the prevalence of OF in young Warmblood riding horses. |
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Institute of Animal Breeding and Genetics, School of Veterinary Medicine Hannover, 30559 Hannover, Germany. kathrin-friederike.stock@tiho-hannover.de |
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1090-0233 |
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PMID:16427591 |
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Equine Behaviour @ team @ |
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3712 |
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