20/08/2026
Related to co-regulation! You can be the leader that your horse needs in very real ways 🫶🏻
🐴 Can company make stressful situations easier for horses?
Horses are highly social animals, but can having a familiar horse or human nearby actually change how they respond to something potentially frightening?
At the ISES 2026 Conference, Debora Cinganelli and colleagues investigated social facilitation in horses approaching a novel stressor.
Twenty seven horses were divided into three groups. Horses encountered a colourful inflatable object with moving ribbons either alone, with a familiar human, or with a known horse that had previously been familiarised with the object.
Researchers assessed behaviour, distance from the object, facial expressions, heart rate and salivary cortisol to build a broader picture of each horse's response.
Horses facing the stressor alone showed the greatest physiological stress response. Their heart rates were significantly higher than those of horses accompanied by either a human or another horse. Cortisol also significantly increased after the test in horses facing the object alone, while neither accompanied group showed a significant increase.
Behaviour reflected these differences too. Horses tested alone were found furthest from the object more frequently and showed more lip pressing than horses with company.
Interestingly, horses accompanied by a familiar human and those accompanied by another horse did not significantly differ in heart rate or cortisol response. This suggests that, in this situation, a familiar person may also provide meaningful social support.
The findings have potential applications beyond novel object tests, including veterinary procedures, transport, training and introducing horses to unfamiliar environments.
The key message? Social support matters. When faced with something potentially stressful, having either a familiar human or equine companion present may help reduce a horse's acute stress response and provide a simple way to support welfare.