Animal Cognition
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You talkin’ to me? An assessment of commands as play signals during dog–human play
Animal Cognition - Tập 24 - Trang 329-339 - 2021
During play with a dog, humans commonly command the dog to engage in particular activities. How effective are commands during play, and do they serve as play signals? To answer this question, I examined commands issued to dogs by 21 familiar and 17 unfamiliar persons who played with a dog, and the dog’s responses. Specifically, I examined dogs’ actions following commands containing the words (in d......
Responses to mirror-image stimulation in jungle crows (Corvus macrorhynchos)
Animal Cognition - Tập 3 - Trang 61-64 - 2000
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 ev......
Do capuchin monkeys use weight to select hammer tools?
Animal Cognition - Tập 11 - Trang 413-422 - 2008
The extent to which tool-using animals take into account the properties of the tool is little explored. The use of percussors to crack open encapsulated fruit is a complex form of tool use, the choice of an adequate tool being a critical aspect in success. Several properties (e.g., material, resistance, friability, shape and weight) affect the suitability of an object to open a hard-shelled nut, w......
Quantity discrimination by kittens of the domestic cat (Felis silvestris catus)
Animal Cognition - Tập 26 - Trang 1345-1352 - 2023
Quantitative abilities are well described in many species and in diverse life situations, including in the adult domestic cat. However, such abilities have been much less studied during ontogeny. In the present study we examined spontaneous quantity discrimination by pre-weaning age kittens in two-way food choice experiments. In Experiment 1, 26 kittens performed 12 trials with different ratios be......
Information seeking by orangutans: a generalized search strategy?
Animal Cognition - Tập 15 - Trang 293-304 - 2011
Recent empirical work has suggested that some species of non-human primates may be aware of their knowledge states. One finding to support this claim is that they seek information about the location of a hidden food item when they are unsure of its location, but not when they already know where it is, which purportedly demonstrates metacognition. However, this behaviour may instead reflect a gener......
Something worth remembering: visual discrimination in sharks
Animal Cognition - Tập 18 - Trang 463-471 - 2014
This study investigated memory retention capabilities of juvenile gray bamboo sharks (Chiloscyllium griseum) using two-alternative forced-choice experiments. The sharks had previously been trained in a range of visual discrimination tasks, such as distinguishing between squares, triangles and lines, and their corresponding optical illusions (i.e., the Kanizsa figures or Müller–Lyer illusions), and......
The effects of age, rank and neophobia on social learning in horses
Animal Cognition - Tập 17 - Trang 645-655 - 2013
Social learning is said to meet the demands of complex environments in which individuals compete over resources and cooperate to share resources. Horses (Equus caballus) were thought to lack social learning skills because they feed on homogenously distributed resources with few reasons for conflict. However, the horse’s social environment is complex, which raises the possibility that its capacity ......
Reconciliation and variation in post-conflict stress in Japanese macaques (Macaca fuscata fuscata): testing the integrated hypothesis
Animal Cognition - Tập 4 - Trang 259-268 - 2001
Reconciliation in primates, a post-conflict affiliative interaction between former opponents, appears to have two functions: (1) to repair relationship damaged by aggression such that animals who share more valuable relationships are more likely to reconcile, and (2) to reduce the post-conflict uncertainty and stress of former combatants. The ’integrated hypothesis’ of reconciliation links these ......
Rats build and update topological representations through exploration
Animal Cognition - Tập 15 Số 3 - Trang 359-368 - 2012
Movement and vocal intonation together evoke social referencing in companion dogs when confronted with a suspicious stranger
Animal Cognition - Tập 23 - Trang 913-924 - 2020
Dogs have been claimed to engage in social referencing by responding in a way that corresponded with their owners' reaction in some contexts. We aimed to assess how owners’ actions affect family dogs’ behaviour in two ambiguous lifelike situations. In Experiment 1, two groups were tested; in the suspicious owner (SO) group, owners behaved suspiciously (N = 25), in the reassuring owner (RO) group, ......
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