How horses (Equus caballus) see the world: humans as significant “objects”.

The research article investigates how horses perceive humans, based on their prior experiences and interactions, which consequently influence their reactions in future encounters.

Introduction

The researchers of this study hypothesized that horses maintain some form of memory of their encounters with humans, which influences their reactions in future interactions. Horses’ perception of humans could thereby be based on their previous experiences, habitually positive or negative.

Methodology

• Participants: The study involved 59 adult horses that had daily interaction with humans.
• Tests: Three distinct behavioral tests were conducted that involved an unknown experimenter. These tests evaluated three different memorized types of human-animal interactions (not work-related, using work-related objects, unfamiliar working task).
• Observations: Standardized observations were conducted of routine interactions between each horse and its familiar handler (caretaker).
• Data Recording: Both investigative (positive memory) and aggressive (negative memory) behaviors of the horses were recorded during the tests to get a comprehensive view of their reactions towards humans.

Findings

• Correlations between tests revealed that horses perceive humans generally as either positive or negative.
• The tests which were not regularly performed showed more instances of positive reactions from the horses.
• Yet, certain horses reacted positively to a motionless person in their space but reacted negatively when the same person approached them for tasks like halter fitting.
• Aggressive reactions served as more reliable indicators of the relationship between horse and human, compared to positive reactions. These aggressive reactions were more apparent during interactions with both familiar and unfamiliar humans.
• Horses portrayed a generalized perception of humans, indicating that their prior experiences influence their reactions in future interactions.

Conclusion

The study supported the initial hypothesis that horses form a memory of humans impacting their reactions in subsequent interactions. Hence, horses’ perception of humans could be established based on the experiences they accrue through repeated interactions. The study findings are significant as they shed light on the horses’ cognitive ability to form memories of their past interactions and utilize them to predict future encounters.