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Home / Equine Research Bank / Curr Zool / Yawning in sync: implications for social cohesion in horses.
Current zoology2024; 71(2); 137-151; doi: 10.1093/cz/zoae052

Yawning in sync: implications for social cohesion in horses.

Abstract: The increasing interest in the study of spontaneous (SY) and contagious yawning (CY) was so far focused on several taxa, especially primates. Here, we focused on SY and CY in horses, a suitable species due to their complex social dynamics that has been largely overlooked in research on these phenomena. By analyzing videos of 48 horses on pasture, we identified 2 yawning morphologies: Covered ( ) and Uncovered Teeth ( ). Using EquiFACS, we quantitatively demonstrated that and differ in terms of muscle recruitment. Moreover, we provide the first evidence for the presence of CY by comparing 2 different conditions: chewing-yawn-chewing versus chewing-chewing-chewing. Supporting the in our mares, CY was more prominent among subjects sharing good relationships. Moreover, subjects responded more rapidly to kin compared with non-kin and kin frequently grooming each other responded even more rapidly to each other yawns. The high familiar yawn sensitivity can provide selective advantages increasing behavioral synchronization and group cohesion.
© The Author(s) 2024. Published by Oxford University Press on behalf of Editorial Office, Current Zoology.
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Publication Date: 2024-09-16 PubMed ID: 40264711PubMed Central: PMC12011488DOI: 10.1093/cz/zoae052Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research focuses on studying spontaneous and contagious yawning in horses to understand social dynamics and potential indications of group cohesion.

Study Overview

  • This study centers around understanding the social dynamics in horses through spontaneous (SY) and contagious yawning (CY).
  • The research analyzed video recordings of 48 horses on a pasture to observe these phenomena in their natural setting.
  • The researchers identified two types of yawning in horses – Covered Teeth and Uncovered Teeth and used a horse-specific coding system called EquiFACS to analyze the facial muscle activity involved in these types of yawns.

Findings

  • The research found evidence of contagious yawning in horses, demonstrating the social nature of this behavior.
  • Contagious yawning, according to the observations, was more prevalent among horses which shared good relationships.
  • Moreover, horses were quicker to yawn in response to yawns from members of their kin and those they frequently engaged with in grooming activities.

Implications

  • The research indicates that yawning could provide social cues in horses and increase behavioral synchronization, promoting group cohesion.
  • The high sensitivity to yawning among familiar horses could have selective advantages in the context of group dynamics and communication.

Significance

  • This study provides unique insights into the social behaviors and dynamics of horses, a subject that has been relatively overlooked until now.
  • The findings open a new perspective for understanding social behaviors in other animal species as well.

Cite This Article

APA
(2024). Yawning in sync: implications for social cohesion in horses. Curr Zool, 71(2), 137-151. https://doi.org/10.1093/cz/zoae052

Publication

Current zoology
ISSN: 1674-5507
NlmUniqueID: 101508778
Country: England
Language: English
Volume: 71
Issue: 2
Pages: 137-151

Researcher Affiliations

Conflict of Interest Statement

The authors declare that they have no conflict of interest.

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