Most of us with any horse savvy feel that we have a solid sense of when our horses are happy, and that we don’t need a whole lot of scientific mumbo-jumbo to tell us so. However, research suggests that we may not be as skilled at discerning equine well-being as we think. Subtle or non-existent behavioural cues, human desensitization to equine suffering and ignorance about what well-being looks like all compromise our ability to identify equine happiness. Fortunately, there are objective measures that can provide greater insight into horses’ psychological well-being in order to help boost your horse’s happiness. Here, I will explore why our own understanding of a horses’ happiness is prone to error, and how we might do a better job of ensuring that our horses really are the “happy.”

WHY IT IS HARD TO IDENTIFY A “HAPPY” HORSE

1. The problem of stoicism
Although most of us believe that if our horses are stressed they will tell us, research challenges the notion that we can determine a horse’s distress by behavioural indicators alone. British researchers Yarnell and Hall looked at behavioural and physiological measures of stress before, during and after a “sham” clipping – a 10-minute session with clipping blades removed (2013). Based on previous clipping history, horses were grouped as either “compliant” or “non-compliant.” Not surprisingly, non-compliant horses were more reactive and less relaxed. However, both compliant and non-compliant horses exhibited equal physiological indicators of stress: higher cortisol levels, elevated heart rate and increased eye temperature, even in this abbreviated session. The authors suggest that horses may suppress flight responses when escape is not possible, and that this suppression is a known contributor to the development of abnormal behaviours and adverse physiological health.

2. Invisible stress: Learned helplessness looks like compliance
When horses (like other animals, including humans) face prolonged, inescapable stress, they are vulnerable to “learned helplessness.” This term was originally coined by Martin Seligman (1968), who conditioned dogs to jump over a barrier at the sound of a bell, alerting them that the floor would soon be electrically charged. When Seligman then charged floors on either side of the barrier so that the dogs could not escape the shock, they eventually ignored the warning bell, whimpered and lay down on the charged floor. When the escape route was reintroduced the dogs remained inert, even though physiological measures indicated that they were highly distressed.

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