Abstract
Vocalizations convey information about both emotional valence (negative/positive) and motivational states (hostile/non-hostile). However, it remains unclear which of these dimensions primarily determines what the listener decodes from vocalizations as social messages, guiding their reaction (approach/withdraw). To test this question, we presented agonistic (negative|hostile), play/comfort (positive|non-hostile), and distress sounds (negative|non-hostile) to dogs. In Study 1, the motivational state encoded in conspecific calls better explained dogs’ reactions than emotional valence. Distress calls evoked faster approaches but slower withdrawal than agonistic calls, indicating that dogs primarily decode conspecific social messages based on the caller’s motivation. In Study 2, we tested cross-species decodability with chimpanzee and human calls and speech. Neither the callers’ motivational state nor emotional valence explained dogs’ reactions, which did not support predictions based on Morton’s rules and other proposed universal principles of emotion encoding. These findings suggest that the caller’s motivation may have been more significant in close-contact call evolution than emotions, and the mechanisms underlying the processing of conspecific vocalizations do not directly generalize to cross-species vocalizations. Consequently, decoding social messages from vocalizations may rely less on universal rules than previously thought.
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Data availability
All raw data is available in the Supplementary Materials. An example of the Praat script used to assemble the playback sequences and the R script used for the statistical analysis can be found in the Supplementary Materials too.
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Acknowledgements
The authors are grateful to the owners for participating in our tests and incredibly thankful to Théo Lemeux for the blind coding of the videos for the reliability analysis.
Funding
Open access funding provided by Eötvös Loránd University. TF was supported by The Hungarian Academy of Sciences via the János Bolyai Research Scholarship (BO/751/20), The European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (950159) and the Horizon Europe research and innovation programme (101125731), The Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund via the New National Excellence Program (ÚNKP-20-5-ELTE-337, 21-5-ELTE-1061 and ÚNKP-22-5-ELTE-475). PP was supported by the EKÖP-25-4-II University Excellence Scholarship Program by the National Research, Development and Innovation Office. (EKÖP-25-4-II-ELTE-900). EK was supported by The Hungarian Academy of Sciences via a grant to the MTA-ELTE ‘Lendület/Momentum’ Companion Animal Research Group (grant no. PH1404/21) and The Hungarian Academy of Sciences via the National Brain Programme 3.0 (NAP2022-I-3/2022). AA was supported by The Hungarian Academy of Sciences via the National Brain Programme 3.0 (NAP2022-I-3/2022) and The European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (950159). This work was also supported by the European Union’s Horizon Europe Framework programme under the Marie Skłodowska-Curie Grant Agreement No 101168998 (VoCS project).
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Conceptualization: TFMethodology: TF, PPF, KES, AAInvestigation: TF, LK, BL, IRA, PPF, MA, SBRValidation: TF, LK, SBRAnalysis: TF, LK, IRA, MA, SBRVisualization: TFSupervision: TF, EK, AAWriting—original draft: TF, LK, AAWriting—review & editing: TF, LK, IRA, PPF, MA, SBR, KES, EK, AAFunding: TF, EK, AA.
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The authors declare that they have no competing interests. The authors confirm that the sound material used in the study was either their own recordings (dog vocalizations were recorded by FT, chimpanzee vocalizations were recorded by KES) or was from freely available resources under CC BY-NC-SA 4.0 licence (human calls were from Andrey Anikin’s 2017 corpus: https://cogsci.se/publications/2017_corpus.html, and human speech from the RAVDESS corpus: https://www.kaggle.com/datasets/uwrfkaggler/ravdess-emotional-speech-audio), thus no permissions were needed to use them in our study.
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Faragó, T., Kocsis, L., Laczi, B. et al. Dogs’ reactions to motivations and emotions in conspecific and heterospecific vocalizations.
Sci Rep (2026). https://doi.org/10.1038/s41598-026-46906-y
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DOI: https://doi.org/10.1038/s41598-026-46906-y
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