Domestic dogs (Canis familiaris) use a physical marker to locate hidden food.

Journal Article (Journal Article)

Dogs can use the placement of an arbitrary marker to locate hidden food in an object-choice situation. We tested domestic dogs (Canis familiaris) in three studies aimed at pinning down the relative contributions of the human's hand and the marker itself. We baited one of two cups (outside of the dogs' view) and gave the dog a communicative cue to find the food. Study 1 systematically varied dogs' perceptual access to the marker placing event, so that dogs saw either the whole human, the hand only, the marker only, or nothing. Follow-up trials investigated the effect of removing the marker before the dog's choice. Dogs used the marker as a communicative cue even when it had been removed prior to the dog's choice and attached more importance to this cue than to the hand that placed it although the presence of the hand boosted performance when it appeared together with the marker. Study 2 directly contrasted the importance of the hand and the marker and revealed that the effect of the marker diminished if it had been associated with both cups. In contrast touching both cups with the hand had no effect on performance. Study 3 investigated whether the means of marker placement (intentional or accidental) had an effect on dogs' choices. Results showed that dogs did not differentiate intentional and accidental placing of the marker. These results suggest that dogs use the marker as a genuine communicative cue quite independently from the experimenter's actions.

Full Text

Duke Authors

Cited Authors

  • Riedel, J; Buttelmann, D; Call, J; Tomasello, M

Published Date

  • January 2006

Published In

Volume / Issue

  • 9 / 1

Start / End Page

  • 27 - 35

PubMed ID

  • 15846526

Electronic International Standard Serial Number (EISSN)

  • 1435-9456

International Standard Serial Number (ISSN)

  • 1435-9448

Digital Object Identifier (DOI)

  • 10.1007/s10071-005-0256-0


  • eng