Vocal expression of emotions in mammals: mechanisms of production and evidence
Open accessAbstract
Emotions play a crucial role in an animal's life because they facilitate responses to external or internal events of significance for the organism. In social species, one of the main functions of emotional expression is to regulate social interactions. There has recently been a surge of interest in animal emotions in several disciplines, ranging from neuroscience to evolutionary zoology. Because measurements of subjective emotional experiences are not possible in animals, researchers use neurophysiological, behavioural and cognitive indicators. However, good indicators, particularly of positive emotions, are still lacking. Vocalizations are linked to the inner state of the caller. The emotional state of the caller causes changes in the muscular tension and action of its vocal apparatus, which in turn, impacts on vocal parameters of vocalizations. By considering the mode of production of vocalizations, we can understand and predict how vocal parameters should change according to the arousal (intensity) or valence (positive/negative) of emotional states. In this paper, I review the existing literature on vocal correlates of emotions in mammals. Non‐human mammals could serve as ideal models to study vocal expression of emotions, because, contrary to human speech, animal vocalizations are assumed to be largely free of control and therefore direct expressions of underlying emotions. Furthermore, a comparative approach between humans and other animals would give us a better understanding of how emotion expression evolved. Additionally, these non‐invasive indicators could serve various disciplines that require animal emotions to be clearly identified, including psychopharmacology and animal welfare science.
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Acoustic communication lies at the core of ecology and evolution, mediating behaviors such as courtship, parental care, territorial defense, and foraging.
“Acoustic communication lies at the core of ecology and evolution, mediating behaviors such as courtship, parental care, territorial defense, foraging, and more”
From Listening forward: emerging roles of bioacoustics in ecology, evolution, and conservation (2026) · cites this paper as Briefer 2012
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Flagged first, then by citations
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Cited by
Sorted by citations
The potential for acoustic individual identification in mammals
Linhart, P., Mahamoud-Issa, M., Stowell, D., & Blumstein, D. T. (2022) · Mammalian Biology · doi:10.1007/s42991-021-00222-2 · Cited by 39 · see citing works
Parameterizing animal sounds and motion with animal-attached tags to study acoustic communication
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Martin, K., Adam, O., Obin, N., & Dufour, V. (2022) · doi:10.1101/2022.02.19.481011 · Cited by 6 · see citing works
Listening forward: emerging roles of bioacoustics in ecology, evolution, and conservation
Zsebők, S. (2026) · Biologia Futura · doi:10.1007/s42977-026-00322-5
“Acoustic communication lies at the core of ecology and evolution, mediating behaviors such as courtship, parental care, territorial defense, foraging, and more (Balakrishnan 2016; Briefer 2012; Podos and Webster 2022).”
- Authors
- Briefer, E. F.
- Affiliations
- University of London (GB)
- Corresponding author
- Briefer, E. F.
- ORCID
- Briefer, E. F.
- Venue
- Journal of Zoology
- Publisher
- Wiley
- Published
- 2012-05-08
- Volume
- 288
- Issue
- 1
- Pages
- 1-20
- ISSN
- 0952-8369 (ISSN-L)
- 1469-7998
- OpenAlex
- W1543977753
- Cited by
- 541
- References
- 158
- Citations by year
- 2026: 54 · 2025: 58 · 2024: 49 · 2023: 47 · 2022: 46 · 2021: 46 · 2020: 43 · 2019: 45 · 2018: 40 · 2017: 41 · 2016: 26 · 2015: 14 · 2014: 16 · 2013: 10 · 2012: 6
- FWCI
- 11.35
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Zoology (publishedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
- WBI Studies Repository (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Developmental Biology › Animal Vocal Communication and Behavior
- Health Sciences › Veterinary › Small Animals › Animal Behavior and Welfare Studies
- Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
- Keywords
- emotional vocalizations, animal emotions, mammalian vocalizations, voice parameters, arousal, valence, positive emotions, vocal apparatus, animal welfare indicators
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
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