| Records |
| Author |
Burden, F.; Thiemann, A. |
| Title |
Donkeys Are Different |
Type |
Journal Article |
| Year |
2015 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal  |
Proceedings of the 2015 Equine Science Society Symposium |
| Volume |
35 |
Issue |
5 |
Pages |
376-382 |
| Keywords |
Donkey; Ass; Equid; Mule |
| Abstract |
As a unique species of equine, the donkey has certain specific variations from the horse. This review highlights the origins of the donkey and how this impacts on its behavior, physiology, and propensity to disease. The donkey is less of a flight animal and has been used by humans for pack and draught work, in areas where their ability to survive poorer diets, and transboundary disease while masking overt signs of pain and distress has made them indispensable to human livelihoods. When living as a companion animal, however, the donkey easily accumulates adipose tissue, and this may create a metabolically compromised individual prone to diseases of excess such as laminitis and hyperlipemia. They show anatomic variations from the horse especially in the hoof, upper airway, and their conformation. Variations in physiology lead to differences in the metabolism and distribution of many drugs. With over 44 million donkeys worldwide, it is important that veterinarians have the ability to understand and treat this equid effectively. |
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0737-0806 |
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Equine Behaviour @ team @ |
Serial |
6541 |
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| Author |
Hartmann, E.; Christensen, J.W.; McGreevy, P.D. |
| Title |
Dominance and Leadership: Useful Concepts in Human-Horse Interactions? |
Type |
Journal Article |
| Year |
2017 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
Proceedings of the 2017 Equine Science Symposium |
| Volume |
52 |
Issue |
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Pages |
1-9 |
| Keywords |
Horse; Social order; Dominance hierarchy; Aggression; Injury; Learning; Training |
| Abstract |
Dominance hierarchies in horses primarily influence priority access to limited resources of any kind, resulting in predictable contest outcomes that potentially minimize aggressive encounters and associated risk of injury. Levels of aggression in group-kept horses under domestic conditions have been reported to be higher than in their feral counterparts but can often be attributed to suboptimal management. Horse owners often express concerns about the risk of injuries occurring in group-kept horses, but these concerns have not been substantiated by empirical investigations. What has not yet been sufficiently addressed are human safety aspects related to approaching and handling group-kept horses. Given horse's natural tendency to synchronize activity to promote group cohesion, questions remain about how group dynamics influence human-horse interactions. Group dynamics influence a variety of management scenarios, ranging from taking a horse out of its social group to the prospect of humans mimicking the horse's social system by taking a putative leadership role and seeking after an alpha position in the dominance hierarchy to achieve compliance. Yet, there is considerable debate about whether the roles horses attain in their social group are of any relevance in their reactions to humans. This article reviews the empirical data on social dynamics in horses, focusing on dominance and leadership theories and the merits of incorporating those concepts into the human-horse context. This will provide a constructive framework for informed debate and valuable guidance for owners managing group-kept horses and for optimizing human-horse interactions. |
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0737-0806 |
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Equine Behaviour @ team @ |
Serial |
6712 |
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| Author |
Marr, I.; Preisler, V.; Farmer, K.; Stefanski, V.; Krueger, K. |
| Title |
Non-invasive stress evaluation in domestic horses (Equus caballus): impact of housing conditions on sensory laterality and immunoglobulin A |
Type |
Journal Article |
| Year |
2020 |
Publication |
Royal Society Open Science |
Abbreviated Journal |
Royal Society Open Science |
| Volume |
7 |
Issue |
2 |
Pages |
191994 |
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| Abstract |
The study aimed to evaluate sensory laterality and concentration of faecal immunoglobulin A (IgA) as non-invasive measures of stress in horses by comparing them with the already established measures of motor laterality and faecal glucocorticoid metabolites (FGMs). Eleven three-year-old horses were exposed to known stressful situations (change of housing, initial training) to assess the two new parameters. Sensory laterality initially shifted significantly to the left and faecal FGMs were significantly increased on the change from group to individual housing and remained high through initial training. Motor laterality shifted significantly to the left after one week of individual stabling. Faecal IgA remained unchanged throughout the experiment. We therefore suggest that sensory laterality may be helpful in assessing acute stress in horses, especially on an individual level, as it proved to be an objective behavioural parameter that is easy to observe. Comparably, motor laterality may be helpful in assessing long-lasting stress. The results indicate that stress changes sensory laterality in horses, but further research is needed on a larger sample to evaluate elevated chronic stress, as it was not clear whether the horses of the present study experienced compromised welfare, which it has been proposed may affect faecal IgA. |
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Royal Society |
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doi: 10.1098/rsos.191994 |
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Equine Behaviour @ team @ |
Serial |
6608 |
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| Author |
Bloom, P. |
| Title |
Behavior. Can a dog learn a word? |
Type |
Journal Article |
| Year |
2004 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
304 |
Issue |
5677 |
Pages |
1605-1606 |
| Keywords |
Animals; Child; Child, Preschool; *Dogs; Humans; *Learning; *Memory; *Vocabulary |
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| Address |
Department of Psychology, Yale University, Post Office Box 208205, New Haven, CT 06520-8205, USA. paul.bloom@yale.edu |
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English |
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1095-9203 |
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PMID:15192205 |
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no |
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28 |
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| Author |
Blaisdell, A.P.; Sawa, K.; Leising, K.J.; Waldmann, M.R. |
| Title |
Causal reasoning in rats |
Type |
Journal Article |
| Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
311 |
Issue |
5763 |
Pages |
1020-1022 |
| Keywords |
Animals; *Association Learning; Bayes Theorem; *Cognition; Comprehension; Forecasting; Male; Rats; Rats, Long-Evans |
| Abstract |
Empirical research with nonhuman primates appears to support the view that causal reasoning is a key cognitive faculty that divides humans from animals. The claim is that animals approximate causal learning using associative processes. The present results cast doubt on that conclusion. Rats made causal inferences in a basic task that taps into core features of causal reasoning without requiring complex physical knowledge. They derived predictions of the outcomes of interventions after passive observational learning of different kinds of causal models. These competencies cannot be explained by current associative theories but are consistent with causal Bayes net theories. |
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Department of Psychology, University of California, Los Angeles, CA 90095, USA. blaisdell@psych.ucla.edu |
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1095-9203 |
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| Notes |
PMID:16484500 |
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no |
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refbase @ user @ |
Serial |
154 |
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| Author |
de Waal, F.B. |
| Title |
Primates--A natural heritage of conflict resolution |
Type |
Journal Article |
| Year |
2000 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
289 |
Issue |
5479 |
Pages |
586-590 |
| Keywords |
Aggression/*psychology; Animals; Behavior, Animal; *Conflict (Psychology); Female; Humans; Male; *Primates; *Social Behavior; Social Dominance |
| Abstract |
The traditional notion of aggression as an antisocial instinct is being replaced by a framework that considers it a tool of competition and negotiation. When survival depends on mutual assistance, the expression of aggression is constrained by the need to maintain beneficial relationships. Moreover, evolution has produced ways of countering its disruptive consequences. For example, chimpanzees kiss and embrace after fights, and other nonhuman primates engage in similar “reconciliations.” Theoretical developments in this field carry implications for human aggression research. From families to high schools, aggressive conflict is subject to the same constraints known of cooperative animal societies. It is only when social relationships are valued that one can expect the full complement of natural checks and balances. |
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Living Links, Center for the Advanced Study of Human and Ape Evolution, Yerkes Regional Primate Research Center, and Psychology Department, Emory University, Atlanta, GA 30322, USA. dewaal@emory.edu |
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0036-8075 |
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PMID:10915614 |
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no |
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refbase @ user @ |
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187 |
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| Author |
Kerr, R.A. |
| Title |
PALEOCLIMATOLOGY. Atlantic mud shows how melting ice triggered an ancient chill |
Type |
Journal Article |
| Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
312 |
Issue |
5782 |
Pages |
1860 |
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1095-9203 |
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PMID:16809498 |
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no |
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refbase @ user @ |
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283 |
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| Author |
Cheney, D.; Seyfarth, R.; Smuts, B. |
| Title |
Social relationships and social cognition in nonhuman primates |
Type |
Journal Article |
| Year |
1986 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
234 |
Issue |
4782 |
Pages |
1361-1366 |
| Keywords |
Animals; *Cognition; Female; Male; Pair Bond; Primates/*physiology; *Social Behavior; Social Dominance; Social Perception |
| Abstract |
Complex social relationships among nonhuman primates appear to contribute to individual reproductive success. Experiments with and behavioral observations of natural populations suggest that sophisticated cognitive mechanisms may underlie primate social relationships. Similar capacities are usually less apparent in the nonsocial realm, supporting the view that at least some aspects of primate intelligence evolved to solve the challenges of interacting with conspecifics. |
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0036-8075 |
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PMID:3538419 |
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no |
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refbase @ user @ |
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349 |
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| Author |
Seyfarth, R.M.; Cheney, D.L.; Marler, P. |
| Title |
Monkey responses to three different alarm calls: evidence of predator classification and semantic communication |
Type |
Journal Article |
| Year |
1980 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
210 |
Issue |
4471 |
Pages |
801-803 |
| Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Cercopithecidae/*physiology; *Fear; Female; Male; Predatory Behavior; Vocalization, Animal |
| Abstract |
Vervet monkeys give different alarm calls to different predators. Recordings of the alarms played back when predators were absent caused the monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms. Adults call primarily to leopards, martial eagles, and pythons, but infants give leopard alarms to various mammals, eagle alarms to many birds, and snake alarms to various snakelike objects. Predator classification improves with age and experience. |
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0036-8075 |
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PMID:7433999 |
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no |
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refbase @ user @ |
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351 |
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Clutton-Brock, T.H.; Russell, A.F.; Sharpe, L.L.; Brotherton, P.N.; McIlrath, G.M.; White, S.; Cameron, E.Z. |
| Title |
Effects of helpers on juvenile development and survival in meerkats |
Type |
Journal Article |
| Year |
2001 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
293 |
Issue |
5539 |
Pages |
2446-2449 |
| Keywords |
Animals; Breeding; Carnivora/growth & development/*physiology; *Cooperative Behavior; Feeding Behavior; Female; Male; Survival Rate; *Weight Gain |
| Abstract |
Although breeding success is known to increase with group size in several cooperative mammals, the mechanisms underlying these relationships are uncertain. We show that in wild groups of cooperative meerkats, Suricata suricatta, reductions in the ratio of helpers to pups depress the daily weight gain and growth of pups and the daily weight gain of helpers. Increases in the daily weight gain of pups are associated with heavier weights at independence and at 1 year of age, as well as with improved foraging success as juveniles and higher survival rates through the first year of life. These results suggest that the effects of helpers on the fitness of pups extend beyond weaning and that helpers may gain direct as well as indirect benefits by feeding pups. |
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Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk |
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0036-8075 |
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PMID:11577235 |
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no |
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refbase @ user @ |
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414 |
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