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Author |
Lane, J.G.; Mair, T.S. |
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Title |
Observations on headshaking in the horse |
Type |
Journal Article |
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Year |
1987 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
19 |
Issue  |
4 |
Pages |
331-336 |
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Keywords |
Animals; *Behavior, Animal; Female; *Head; *Horses; Male; *Movement |
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Abstract |
The clinical records of 100 cases of headshaking in horses were reviewed. Possible causes of the abnormal behaviour were identified in 11 animals; these included ear mite infestation, otitis interna, cranial nerve dysfunction, cervical injury, ocular disease, guttural pouch mycosis, dental periapical osteitis and suspected vasomotor rhinitis. However, in only two of these could it be shown that correction of the abnormality led to elimination of the headshaking. The additional clinical signs exhibited by the other idiopathic cases of headshaking included evidence of nasal irritation, sneezing and snorting, nasal discharge, coughing and excessive lacrimation. Many of these horses also showed a marked seasonal pattern with respect to the onset of the disease and the recurrence of signs in subsequent years. The clinical presentation of idiopathic headshakers and the seasonal incidence of the signs closely resemble allergic rhinitis in man. |
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0425-1644 |
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PMID:3622462 |
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refbase @ user @ |
Serial |
1953 |
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Author |
Lindsay, F.E.; Burton, F.L. |
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Title |
Observational study of “urine testing” in the horse and donkey stallion |
Type |
Journal Article |
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Year |
1983 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
15 |
Issue |
4 |
Pages |
330-336 |
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Keywords |
Animals; *Behavior, Animal; Horses/anatomy & histology/*physiology; Male; Nasal Septum; Nose/anatomy & histology; Olfactory Mucosa/physiology; Perissodactyla/*physiology; Sex Attractants/urine; Smell/physiology |
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Abstract |
Although “urine testing” is said to enable the male equid to assess the sexual status of the mare, there are no reports in the literature of any detailed study of this behavioural response of the stallion. Behavioural response to conspecific urine was studied in two horse stallions and one donkey stallion. The relevant nasopalatine anatomy is described. Events observed during urine testing included head, neck, lip, jaw, tongue movements, penile changes and nasal secretion. Nasal endoscopy indicated that the source of part of the nasal secretion was the secretory glands of the vomeronasal organ complex. The significance and probable function of these events in urine testing is discussed. |
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0425-1644 |
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Notes |
PMID:6641679 |
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Call Number |
refbase @ user @ |
Serial |
1955 |
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Author |
van Niekerk, H.P. |
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Title |
Ethological studies within the man-horse relationship |
Type |
Journal Article |
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Year |
1980 |
Publication |
Journal of the South African Veterinary Association |
Abbreviated Journal |
J S Afr Vet Assoc |
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Volume |
51 |
Issue |
4 |
Pages |
237-238 |
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Keywords |
Animals; Behavior, Animal; Hearing; Horses/*physiology; Humans; Smell; Taste; Touch; Vision |
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Abstract |
Certain aspects of ethology and the horse's senses are discussed to bring about a better understanding between man and horse. Furthermore the behaviour of horses with respect to housing, feeding, breeding, veterinary treatment and work are considered. |
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ISSN |
1019-9128 |
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Notes |
PMID:7241494 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1960 |
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Author |
Lynch, J.J.; Fregin, G.F.; Mackie, J.B.; Monroe, R.R.J. |
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Title |
Heart rate changes in the horse to human contact |
Type |
Journal Article |
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Year |
1974 |
Publication |
Psychophysiology |
Abbreviated Journal |
Psychophysiology |
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Volume |
11 |
Issue |
4 |
Pages |
472-478 |
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Keywords |
Animals; Behavior, Animal; Electrocardiography/veterinary; *Heart Rate; Horses/*physiology; Humans; *Social Behavior; *Touch |
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ISSN |
0048-5772 |
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Notes |
PMID:4852234 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1965 |
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Author |
Pepperberg, I.M. |
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Title |
Grey parrot numerical competence: a review |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
4 |
Pages |
377-391 |
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Keywords |
Animals; *Behavior, Animal; *Comprehension; *Concept Formation; *Mathematics; *Parrots |
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Abstract |
The extent to which humans and nonhumans share numerical competency is a matter of debate. Some researchers argue that nonhumans, lacking human language, possess only a simple understanding of small quantities, generally less than four. Animals that have, however, received some training in human communication systems might demonstrate abilities intermediate between those of untrained nonhumans and humans. Here I review data for a Grey parrot (Psittacus erithacus) that has been shown to quantify sets of up to and including six items (including heterogeneous subsets) using vocal English labels, to comprehend these labels fully, and to have a zero-like concept. Recent research demonstrates that he can also sum small quantities. His success shows that he understands number symbols as abstract representations of real-world collections, and that his sense of number compares favorably to that of chimpanzees and young human children. |
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Address |
Department of Psychology, Brandeis University, Waltham, MA 02454, USA |
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1435-9448 |
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Notes |
PMID:16909236 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2448 |
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Author |
Bugnyar, T.; Heinrich, B. |
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Title |
Pilfering ravens, Corvus corax, adjust their behaviour to social context and identity of competitors |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
4 |
Pages |
369-376 |
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Keywords |
Adaptation, Psychological; Animals; *Behavior, Animal; *Competitive Behavior; Crows/*physiology; *Deception; Feeding Behavior; Female; Male; Social Behavior; *Social Environment |
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Abstract |
Like other corvids, food-storing ravens protect their caches from being pilfered by conspecifics by means of aggression and by re-caching. In the wild and in captivity, potential pilferers rarely approach caches until the storers have left the cache vicinity. When storers are experimentally prevented from leaving, pilferers first search at places other than the cache sites. These behaviours raise the possibility that ravens are capable of withholding intentions and providing false information to avoid provoking the storers' aggression for cache protection. Alternatively, birds may refrain from pilfering to avoid conflicts with dominants. Here we examined whether ravens adjust their pilfer tactics according to social context and type of competitors. We allowed birds that had witnessed a conspecific making caches to pilfer those caches either in private, together with the storer, or together with a conspecific bystander that had not created the caches (non-storer) but had seen them being made. Compared to in-private trials, ravens delayed approaching the caches only in the presence of storers. Furthermore, they quickly engaged in searching away from the caches when together with dominant storers but directly approached the caches when together with dominant non-storers. These findings demonstrate that ravens selectively alter their pilfer behaviour with those individuals that are likely to defend the caches (storers) and support the interpretation that they are deceptively manipulating the others' behaviour. |
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Address |
Department of Biology, University of Vermont, Burlington, VT 05405, USA. thomas.bugnyar@univie.ac.at |
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1435-9448 |
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Notes |
PMID:16909235 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2449 |
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Author |
Lea, S.E.G.; Goto, K.; Osthaus, B.; Ryan, C.M.E. |
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Title |
The logic of the stimulus |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
4 |
Pages |
247-256 |
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Keywords |
Animals; Behavior, Animal/*physiology; Cognition/*physiology; Columbidae; Comprehension/physiology; Dogs; Humans; *Logic; Pattern Recognition, Visual/physiology; Perception/*physiology; Problem Solving/*physiology; Species Specificity |
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Abstract |
This paper examines the contribution of stimulus processing to animal logics. In the classic functionalist S-O-R view of learning (and cognition), stimuli provide the raw material to which the organism applies its cognitive processes-its logic, which may be taxon-specific. Stimuli may contribute to the logic of the organism's response, and may do so in taxon-specific ways. Firstly, any non-trivial stimulus has an internal organization that may constrain or bias the way that the organism addresses it; since stimuli can only be defined relative to the organism's perceptual apparatus, and this apparatus is taxon-specific, such constraints or biases will often be taxon-specific. Secondly, the representation of a stimulus that the perceptual system builds, and the analysis it makes of this representation, may provide a model for the synthesis and analysis done at a more cognitive level. Such a model is plausible for evolutionary reasons: perceptual analysis was probably perfected before cognitive analysis in the evolutionary history of the vertebrates. Like stimulus-driven analysis, such perceptually modelled cognition may be taxon-specific because of the taxon-specificity of the perceptual apparatus. However, it may also be the case that different taxa are able to free themselves from the stimulus logic, and therefore apply a more abstract logic, to different extents. This thesis is defended with reference to two examples of cases where animals' cognitive logic seems to be isomorphic with perceptual logic, specifically in the case of pigeons' attention to global and local information in visual stimuli, and dogs' failure to comprehend means-end relationships in string-pulling tasks. |
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Address |
School of Psychology, Washington Singer Laboratories, University of Exeter, Exeter, EX4 4QG, United Kingdom. s.e.g.lea@exeter.ac.uk |
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1435-9448 |
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Notes |
PMID:16909234 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2450 |
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Author |
Watanabe, S.; Huber, L. |
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Title |
Animal logics: decisions in the absence of human language |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
9 |
Issue |
4 |
Pages |
235-245 |
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Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Brain/physiology; Cognition/*physiology; Decision Making/*physiology; Evolution; Humans; *Language; *Logic; Problem Solving/physiology |
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Abstract |
Without Abstract |
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Address |
Department of Psychology, Keio University, Mita 2-15-45, Minato-ku, Tokyo 108, Japan. swat@flet.keio.ac.jp |
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1435-9448 |
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Notes |
PMID:16909231 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2453 |
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Author |
Santos, L.R.; Barnes, J.L.; Mahajan, N. |
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Title |
Expectations about numerical events in four lemur species (Eulemur fulvus, Eulemur mongoz, Lemur catta and Varecia rubra) |
Type |
Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
4 |
Pages |
253-262 |
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Keywords |
Animals; *Behavior, Animal; Female; Lemuridae/classification/*psychology; Male; *Pattern Recognition, Visual |
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Abstract |
Although much is known about how some primates--in particular, monkeys and apes--represent and enumerate different numbers of objects, very little is known about the numerical abilities of prosimian primates. Here, we explore how four lemur species (Eulemur fulvus, E. mongoz, Lemur catta, and Varecia rubra) represent small numbers of objects. Specifically, we presented lemurs with three expectancy violation looking time experiments aimed at exploring their expectations about a simple 1+1 addition event. In these experiments, we presented subjects with displays in which two lemons were sequentially added behind an occluder and then measured subjects' duration of looking to expected and unexpected outcomes. In experiment 1, subjects looked reliably longer at an unexpected outcome of only one object than at an expected outcome of two objects. Similarly, subjects in experiment 2 looked reliably longer at an unexpected outcome of three objects than at an expected outcome of two objects. In experiment 3, subjects looked reliably longer at an unexpected outcome of one object twice the size of the original than at an expected outcome of two objects of the original size. These results suggest that some prosimian primates understand the outcome of simple arithmetic operations. These results are discussed in light of similar findings in human infants and other adult primates. |
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Department of Psychology, Yale University, New Haven, CT 06520, USA. laurie.santos@yale.edu |
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1435-9448 |
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Notes |
PMID:15729569 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2492 |
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Author |
Suda, C.; Call, J. |
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Title |
Piagetian conservation of discrete quantities in bonobos (Pan paniscus), chimpanzees (Pan troglodytes), and orangutans (Pongo pygmaeus) |
Type |
Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
4 |
Pages |
220-235 |
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Keywords |
Animals; *Behavior, Animal; Female; Hominidae/*psychology; Male; Pan paniscus; Pan troglodytes; Pongo pygmaeus; *Problem Solving |
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Abstract |
This study investigated whether physical discreteness helps apes to understand the concept of Piagetian conservation (i.e. the invariance of quantities). Subjects were four bonobos, three chimpanzees, and five orangutans. Apes were tested on their ability to conserve discrete/continuous quantities in an over-conservation procedure in which two unequal quantities of edible rewards underwent various transformations in front of subjects. Subjects were examined to determine whether they could track the larger quantity of reward after the transformation. Comparison between the two types of conservation revealed that tests with bonobos supported the discreteness hypothesis. Bonobos, but neither chimpanzees nor orangutans, performed significantly better with discrete quantities than with continuous ones. The results suggest that at least bonobos could benefit from the discreteness of stimuli in their acquisition of conservation skills. |
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Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. suda@eva.mpg.de |
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1435-9448 |
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Notes |
PMID:15692813 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2494 |
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