Records |
Author |
Tebbich, S.; Seed, A.M.; Emery, N.J.; Clayton, N.S. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Non-tool-using rooks, Corvus frugilegus, solve the trap-tube problem |
Type |
Journal Article |
Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
10 |
Issue |
2 |
Pages |
225-231 |
Keywords |
Animals; Behavior, Animal/*physiology; Cognition/*physiology; Crows/*physiology; Female; Male; Problem Solving/*physiology |
Abstract |
The trap-tube problem is used to assess whether an individual is able to foresee the outcome of its actions. To solve the task, an animal must use a tool to push a piece of food out of a tube, which has a trap along its length. An animal may learn to avoid the trap through a rule based on associative processes, e.g. using the distance of trap or food as a cue, or by understanding relations between cause and effect. This task has been used to test physical cognition in a number of tool-using species, but never a non-tool-user. We developed an experimental design that enabled us to test non-tool-using rooks, Corvus frugilegus. Our modification of the task removed the cognitive requirements of active tool use but still allowed us to test whether rooks can solve the trap-tube problem, and if so how. Additionally, we developed two new control tasks to determine whether rooks were able to transfer knowledge to similar, but novel problems, thus revealing more about the mechanisms involved in solving the task. We found that three out of seven rooks solved the modified trap-tube problem task, showing that the ability to solve the trap-tube problem is not restricted to tool-using animals. We found no evidence that the birds solved the task using an understanding of its causal properties, given that none of the birds passed the novel transfer tasks. |
Address |
Department of Experimental Psychology, University of Cambridge, Cambridge, CB2 3EB, UK. st281@cam.ac.uk |
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1435-9448 |
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PMID:17171360 |
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Equine Behaviour @ team @ |
Serial |
2429 |
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Author |
Strickman, D. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Notes on Tabanidae (Diptera) from Paraguay |
Type |
Journal Article |
Year |
1982 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
Volume |
19 |
Issue |
4 |
Pages |
399-402 |
Keywords |
Animals; Cattle; Diptera/*growth & development; Dogs; Ecology; Female; Geography; Horses; Humans; Insect Bites and Stings/epidemiology/veterinary; Male; Paraguay |
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0022-2585 |
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PMID:7154018 |
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Equine Behaviour @ team @ |
Serial |
2690 |
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Author |
Hostetter, A.B.; Russell, J.L.; Freeman, H.; Hopkins, W.D. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Now you see me, now you don't: evidence that chimpanzees understand the role of the eyes in attention |
Type |
Journal Article |
Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
10 |
Issue |
1 |
Pages |
55-62 |
Keywords |
Animal Husbandry/methods; Animals; *Attention; Awareness; Female; Fixation, Ocular/*physiology; Humans; Male; Pan troglodytes/*psychology; *Social Behavior; *Social Perception |
Abstract |
Chimpanzees appear to understand something about the attentional states of others; in the present experiment, we investigated whether they understand that the attentional state of a human is based on eye gaze. In all, 116 adult chimpanzees were offered food by an experimenter who engaged in one of the four experimental manipulations: eyes closed, eyes open, hand over eyes, and hand over mouth. The communicative behavior of the chimpanzees was observed. More visible behaviors were produced when the experimenter's eyes were visible than when the experimenter's eyes were not visible. More vocalizations were produced when the experimenter's eyes were closed than when they were open, but there were no differences in other attention getting behaviors. There was no effect of age or rearing history. The results suggest that chimpanzees use the presence of the eyes as a cue that their visual gestures will be effective. |
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Department of Psychology, University of Wisconsin-Madison, 1202 W. Johnson Street, Madison, WI 53706, USA. abhostetter@wisc.edu |
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1435-9448 |
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PMID:16847659 |
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Equine Behaviour @ team @ |
Serial |
2457 |
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Author |
Jensen, G.D.; Gordon, B.N.; Wolfheim, J. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Nursing behavior in infant monkeys: a sequence analysis |
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Journal Article |
Year |
1975 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
Volume |
55 |
Issue |
1-2 |
Pages |
115-127 |
Keywords |
Animals; Dependency (Psychology); *Feeding Behavior; Female; *Macaca; Male; Sensory Deprivation; Social Behavior; Spatial Behavior |
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0005-7959 |
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PMID:1191212 |
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no |
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Equine Behaviour @ team @ |
Serial |
4153 |
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Author |
Cook, M.; Mineka, S.; Wolkenstein, B.; Laitsch, K. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Observational conditioning of snake fear in unrelated rhesus monkeys |
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Journal Article |
Year |
1985 |
Publication |
Journal of abnormal psychology |
Abbreviated Journal |
J Abnorm Psychol |
Volume |
94 |
Issue |
4 |
Pages |
591-610 |
Keywords |
Animals; *Conditioning, Classical; *Fear; Female; Macaca mulatta; Male; Snakes |
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0021-843X |
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PMID:4078162 |
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no |
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refbase @ user @ |
Serial |
707 |
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Author |
Collery, L. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Observations of equine animals under farm and feral conditions |
Type |
Journal Article |
Year |
1974 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
Volume |
6 |
Issue |
4 |
Pages |
170-173 |
Keywords |
Aggression; Animals; Animals, Newborn; Breeding; Circadian Rhythm; Feeding Behavior; Female; Horses/*physiology; Housing, Animal; Humans; Male; Pregnancy; Puberty; Reproduction; Sexual Behavior, Animal; Social Dominance |
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0425-1644 |
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PMID:4473340 |
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no |
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refbase @ user @ |
Serial |
680 |
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Author |
Lane, J.G.; Mair, T.S. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Observations on headshaking in the horse |
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Journal Article |
Year |
1987 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
Volume |
19 |
Issue |
4 |
Pages |
331-336 |
Keywords |
Animals; *Behavior, Animal; Female; *Head; *Horses; Male; *Movement |
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 @ |
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1953 |
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Author |
Walker, M.L.; Becklund, W.W. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Occurrence of a cattle eyeworm, Thelazia gulosa (Nematoda: Thelaziidae), in an imported giraffe in California and T. lacrymalis in a native horse in Maryland |
Type |
Journal Article |
Year |
1971 |
Publication |
The Journal of Parasitology |
Abbreviated Journal |
J Parasitol |
Volume |
57 |
Issue |
6 |
Pages |
1362-1363 |
Keywords |
Animals; *Animals, Zoo; Artiodactyla; California; Ecology; Eye Diseases/epidemiology/*veterinary; Female; Horse Diseases/*epidemiology; Horses; Male; Maryland; Nematode Infections/epidemiology/*veterinary; Spiruroidea/*classification |
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0022-3395 |
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PMID:5157171 |
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no |
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Equine Behaviour @ team @ |
Serial |
2725 |
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Author |
Roitberg, E.; Franz, H. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Oddity learning by African dwarf goats ( Capra hircus) |
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Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
1 |
Pages |
61-67 |
Keywords |
Animals; *Cues; Female; Goats/*physiology; *Pattern Recognition, Visual; *Task Performance and Analysis |
Abstract |
Seventeen African dwarf goats (adult females) were trained on oddity tasks using an automated learning device. One odd stimulus and three identical nonodd stimuli were presented on a screen divided into four sectors; the sector for the odd stimulus was varied pseudorandomly. Responses to the odd stimulus were deemed to be correct and were reinforced with food. In phase 1, the goats were trained on eight stimulus configurations. From trial to trial the odd discriminandum was either a + symbol or the letter S, and the nonodd discriminandum was the symbol not used as the odd one. In phase 2, the animals were similarly trained using an unfilled triangle or a filled (i.e., solid black) circle. In phase 3, three new discriminanda were used, an unfilled, small circle with radiating lines, an unfilled heart-shaped symbol, and an unfilled oval; which of the three discriminanda was odd and nonodd was varied from trial to trial. Following these training phases, a transfer test was given, which involved 24 new discriminanda sets. These were presented twice for a total of 48 transfer test trials. Results early in training showed approximately 25% correct, which might be expected by chance in a four-choice task. After 500-2,000 trials, results improved to approximately 40-44% correct. The best-performing subject reached 60-80% correct during training. On the transfer test, this subject had 47.9% correct and that significantly exceeded 25% expected by chance. This finding suggests that some exceptional individuals of African dwarf goats are capable of learning the oddity concept. |
Address |
Forschungsinstitut fur die Biologie landwirtschaftlicher Nutztiere, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany. Roitberg@fbn-dummerstorf.de |
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1435-9448 |
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PMID:13680403 |
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Equine Behaviour @ team @ |
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2554 |
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Author |
Nelson, G.S. |
Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Onchocerciasis |
Type |
Journal Article |
Year |
1970 |
Publication |
Advances in Parasitology |
Abbreviated Journal |
Adv Parasitol |
Volume |
8 |
Issue |
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Pages |
173-224 |
Keywords |
Africa; Animals; Anthelmintics/therapeutic use; Artiodactyla; Blindness/etiology; Cattle; Circadian Rhythm; Ddt; Diethylcarbamazine/therapeutic use; Diptera/anatomy & histology/growth & development; Dwarfism/etiology; Ecology; Eye/pathology; Feeding Behavior; Female; Geography; Haplorhini; Hernia, Femoral/etiology; Horses; Humans; Insect Vectors/growth & development; Larva/growth & development; Male; Onchocerca/classification/growth & development; *Onchocerciasis/diagnosis/drug therapy/epidemiology/immunology/pathology/prevention & control/veterinary; Primates; Serologic Tests; Skin/pathology; Skin Tests; Suramin/therapeutic use |
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0065-308X |
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PMID:4997515 |
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Equine Behaviour @ team @ |
Serial |
2738 |
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