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	Author	Viscido, S.V.; Miller, M.; Wethey, D.S.
	Title	The response of a selfish herd to an attack from outside the group perimeter			Type	Journal Article
	Year	2001	Publication	Journal of theoretical biology	Abbreviated Journal	J. Theor. Biol.
	Volume	208	Issue	3	Pages	315-328
	Keywords	Animals; Behavior, Animal; Computer Simulation; Models, Biological; *Movement; Predatory Behavior
	Abstract	According to the selfish herd hypothesis, animals can decrease predation risk by moving toward one another if the predator can appear anywhere and will attack the nearest target. Previous studies have shown that aggregations can form using simple movement rules designed to decrease each animal's Domain of Danger. However, if the predator attacks from outside the group's perimeter, these simple movement rules might not lead to aggregation. To test whether simple selfish movement rules would decrease predation risk for those situations when the predator attacks from outside the flock perimeter, we constructed a computer model that allowed flocks of 75 simulated fiddler crabs to react to one another, and to a predator attacking from 7 m away. We attacked simulated crab flocks with predators of different sizes and attack speeds, and computed relative predation risk after 120 time steps. Final trajectories showed flight toward the center of the flock, but curving away from the predator. Path curvature depended on the predator's size and approach speed. The average crab experienced a greater decrease in predation risk when the predator was small or slow moving. Regardless of the predator's size and speed, however, predation risk always decreased as long as crabs took their flock-mates into account. We conclude that, even when flight away from an external predator occurs, the selfish avoidance of danger can lead to aggregation.
	Address	Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, U.S.A. viscido@u.washington.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0022-5193	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11207093			Approved	no
	Call Number	refbase @ user @			Serial	555
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	Author	Virga, V.; Houpt, K.A.
	Title	Prevalence of placentophagia in horses			Type	Journal Article
	Year	2001	Publication	Equine veterinary journal	Abbreviated Journal	Equine Vet J
	Volume	33	Issue	2	Pages	208-210
	Keywords	Animals; Behavior, Animal; Colic/epidemiology/veterinary; Exploratory Behavior; Feeding Behavior; Female; Horse Diseases/epidemiology; Horses; Incidence; New York/epidemiology; *Placenta; Postpartum Period; Pregnancy; Prevalence; Questionnaires
	Abstract
	Address	Animal Behavior Clinic, Cornell University Hospital for Animals, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0425-1644	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11266073			Approved	no
	Call Number	refbase @ user @			Serial	31
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	Author	Van Schaik, C.
	Title	Why are some animals so smart?			Type	Journal Article
	Year	2006	Publication	Scientific American	Abbreviated Journal	Sci Am
	Volume	294	Issue	4	Pages	64-71
	Keywords	Animals; Behavior, Animal; Cognition; Conditioning (Psychology); Culture; Environment; Equipment and Supplies; Evolution; Indonesia; Intelligence; Learning; Pongo pygmaeus/*physiology; Social Behavior
	Abstract
	Address	Anthropological Institute and Museum, University of Zurich, Switzerland
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8733	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16596881			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2830
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	Author	Tomasello, M.; Call, J.
	Title	The role of humans in the cognitive development of apes revisited			Type	Journal Article
	Year	2004	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	7	Issue	4	Pages	213-215
	Keywords	Animals; Behavior, Animal; Cognition; Culture; Hominidae/psychology; Humans; Imitative Behavior; Imprinting (Psychology); Intention; Social Behavior; Social Environment; Species Specificity
	Abstract
	Address	Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. tomas@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15278733			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2517
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	Author	Swartz, K.B.
	Title	What is mirror self-recognition in nonhuman primates, and what is it not?			Type	Journal Article
	Year	1997	Publication	Annals of the New York Academy of Sciences	Abbreviated Journal	Ann N Y Acad Sci
	Volume	818	Issue		Pages	64-71
	Keywords	Animals; Awareness; Behavior, Animal; Ego; Primates/psychology
	Abstract
	Address	Department of Psychology, Lehman College of the City University of New York, Bronx 10468, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0077-8923	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9237465			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4135
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	Author	Suda, C.; Call, J.
	Title	Piagetian conservation of discrete quantities in bonobos (Pan paniscus), chimpanzees (Pan troglodytes), and orangutans (Pongo pygmaeus)			Type	Journal Article
	Year	2005	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	8	Issue	4	Pages	220-235
	Keywords	Animals; Behavior, Animal; Female; Hominidae/psychology; Male; Pan paniscus; Pan troglodytes; Pongo pygmaeus; *Problem Solving
	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.
	Address	Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. suda@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15692813			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2494
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	Author	Straub, A.
	Title	An intelligent crow beats a lab			Type	Journal Article
	Year	2007	Publication	Science (New York, N.Y.)	Abbreviated Journal	Science
	Volume	316	Issue	5825	Pages	688
	Keywords	Animals; Behavior, Animal; Cognition; *Crows; Dogs; Intelligence; Memory
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1095-9203	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:17478698			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4102
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	Author	Sterling, E.J.; Povinelli, D.J.
	Title	Tool use, aye-ayes, and sensorimotor intelligence			Type	Journal Article
	Year	1999	Publication	Folia Primatologica; International Journal of Primatology	Abbreviated Journal	Folia Primatol (Basel)
	Volume	70	Issue	1	Pages	8-16
	Keywords	Animals; Behavior, Animal; Feeding Behavior; Female; Intelligence; Male; Problem Solving; Psychomotor Performance; Strepsirhini/physiology/psychology
	Abstract	Humans, chimpanzees, capuchins and aye-ayes all display an unusually high degree of encephalization and diverse omnivorous extractive foraging. It has been suggested that the high degree of encephalization in aye-ayes may be the result of their diverse, omnivorous extractive foraging behaviors. In combination with certain forms of tool use, omnivorous extractive foraging has been hypothesized to be linked to higher levels of sensorimotor intelligence (stages 5 or 6). Although free-ranging aye-ayes have not been observed to use tools directly in the context of their extractive foraging activities, they have recently been reported to use lianas as tools in a manner that independently suggests that they may possess stage 5 or 6 sensorimotor intelligence. Although other primate species which display diverse, omnivorous extractive foraging have been tested for sensorimotor intelligence, aye-ayes have not. We report a test of captive aye-ayes' comprehension of tool use in a situation designed to simulate natural conditions. The results support the view that aye-ayes do not achieve stage 6 comprehension of tool use, but rather may use trial-and-error learning to develop tool-use behaviors. Other theories for aye-aye encephalization are considered.
	Address	Deutsches Primatenzentrum, Gottingen, Germany
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0015-5713	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10050062			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4178
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	Author	Soproni, K.; Miklósi, Á.; Topál, J.; Csányi, V.
	Title	*Dogs' (Canis familiaris) responsiveness to human pointing gestures*			Type	Journal Article
	Year	2002	Publication	Journal of Comparative Psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	116	Issue	1	Pages	27-34
	Keywords	Analysis of Variance; Animals; Behavior, Animal; Choice Behavior; Dogs/psychology; Female; Gestures; Male; *Recognition (Psychology); Species Specificity
	Abstract	In a series of 3 experiments, dogs (Canis familiaris) were presented with variations of the human pointing gesture: gestures with reversed direction of movement, cross-pointing, and different arm extensions. Dogs performed at above chance level if they could see the hand (and index finger) protruding from the human body contour. If these minimum requirements were not accessible, dogs still could rely on the body position of the signaler. The direction of movement of the pointing arm did not influence the performance. In summary, these observations suggest that dogs are able to rely on relatively novel gestural forms of the human communicative pointing gesture and that they are able to comprehend to some extent the referential nature of human pointing.
	Address	Department of Ethology, Eotvos Lorand University, Budapest, Hungary. krisztinasoproni@hotmail.com
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11926681			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4962
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	Author	Soproni, K.; Miklósi, A.; Topál, J.; Csányi, V.
	Title	*Comprehension of human communicative signs in pet dogs (Canis familiaris)*			Type	Journal Article
	Year	2001	Publication	Journal of Comparative Psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	115	Issue	2	Pages	122-126
	Keywords	Animals; Behavior, Animal; Choice Behavior; Dogs/psychology; Female; Humans; Male; Nonverbal Communication/psychology; Recognition (Psychology); *Social Behavior
	Abstract	On the basis of a study by D. J. Povinelli, D. T. Bierschwale, and C. G. Cech (1999), the performance of family dogs (Canis familiaris) was examined in a 2-way food choice task in which 4 types of directional cues were given by the experimenter: pointing and gazing, head-nodding (“at target”), head turning above the correct container (“above target”), and glancing only (“eyes only”). The results showed that the performance of the dogs resembled more closely that of the children in D. J. Povinelli et al.'s study, in contrast to the chimpanzees' performance in the same study. It seems that dogs, like children, interpret the test situation as being a form of communication. The hypothesis is that this similarity is attributable to the social experience and acquired social routines in dogs because they spend more time in close contact with humans than apes do, and as a result dogs are probably more experienced in the recognition of human gestures.
	Address	Department of Ethology, Budapest, Hungary. lavina@ludens.elte.hu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11459158			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4963
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