Are Users Good Assessors of Social Dominance in Domestic Horses?
Authors: Jastrzębska Ewa, Siemieniuch Marta, Bizio Adriana, Pietruszka Julia, Górecka-Bruzda Aleksandra
Journal: Animals : an open access journal from MDPI
Summary
# Editorial Summary: Assessing Social Dominance in Horses Eight equine practitioners demonstrated moderate to perfect agreement when ranking the social dominance of 20 horses observed during feed confrontation tests, suggesting that experienced handlers possess reliable intuition about herd hierarchy. Researchers recorded feeding duration, agonistic behaviours, and submissive responses, then calculated a dominance index and compared it against each practitioner's subjective ranking using correlation and agreement analyses. The practitioners' assessments strongly correlated with objective measures—particularly feeding time and withdrawal behaviour when threatened—indicating that observable responses to resource competition accurately reflect underlying dominance status. This validation is practically significant for group housing decisions and management planning, as it confirms that farriers, veterinarians, and yard staff can confidently use their observational skills to identify horses at risk of injury or stress when social groups are reorganised. A noteworthy secondary finding suggests that rolling during feed denial may represent a redirected frustration response, adding nuance to how we interpret behavioural stress in competitive feeding situations.
Read the full abstract on PubMed
Practical Takeaways
- •Your observations of horse behavior during feeding and social interactions are reliable for identifying dominance hierarchies—you can confidently use these assessments when planning group compositions
- •Watch for withdrawal responses to threats as the key behavioral indicator of dominance rank; submissive horses will eat quickly and yield space readily
- •Rolling or other displacement behaviors during feeding frustration may indicate social stress and help identify which horses are struggling in mixed groups
Key Findings
- •Eight equine practitioners showed moderate to perfect agreement in assessing social dominance rank among 20 horses
- •Raters' dominance rankings were strongly negatively correlated with feeding time in confrontation tests (shorter feeding times = more submissive horses)
- •Withdrawal behavior when threatened was the most consistently correlated behavioral variable with raters' dominance assessments
- •Rolling when denied feed access was identified as a potential frustration-releasing or redirected behavior in subordinate horses