The post Horses Can Read Human Facial Expressions, a Study Found first appeared on Crafting Your Home.
Horses may be paying closer attention to human faces than many people realize. Research has found that horses can distinguish between different human facial expressions and respond differently to expressions associated with positive and negative emotions.
That does not necessarily mean a horse understands happiness or anger in the same way a human does. Scientists generally describe the finding more carefully: horses can perceive and respond to emotional information contained in human facial expressions. Several experiments have measured changes in horses’ gaze, behavior, and heart rate when they are shown different human expressions.
The discovery is particularly interesting because horses are highly social animals that have lived and worked alongside humans for thousands of years. Research into their ability to interpret human signals offers a glimpse into how communication can develop between two very different species.
Your Horse May Be Paying More Attention to Your Face Than You Think
One of the most important studies on the subject was published in Biology Letters in 2016. Researchers presented domestic horses with photographs of people displaying either happy or angry facial expressions. The study involved 28 horses in its behavioral analysis, with 17 included in the main heart-rate analysis. Researchers showed the horses photographs of human faces while recording their behavioral and physiological responses.
The results showed a clear difference in how the horses responded to angry and happy faces. When horses viewed angry faces, they were more likely to look at the images with their left eye. They also showed a faster increase in heart rate when exposed to angry photographs. The researchers interpreted these responses as evidence that the horses discriminated between emotional expressions rather than simply reacting to the presence of a human face.
The experiment showed that the animals responded differently to visual signals associated with different emotional states.
Horses React Differently to Happy and Angry Faces
The response to an angry face appears particularly consistent across several studies. Research published in Frontiers in Psychology found that horses were sensitive to human emotional cues and changed their behavior when people displayed different expressions. In a gaze-following experiment, horses followed the experimenter’s gaze less often and spent less time looking toward the person when the person displayed disgust than when they displayed neutral expressions.
Another study examined ponies rather than adult horses and used live human actors instead of photographs. Twenty ponies were exposed to human expressions of anger, sadness, joy, and neutrality. The animals looked more often with their left eye when exposed to anger and more often with their right eye when exposed to joy. They also spent more time looking at angry expressions.
The live-human experiment is useful because it moves the research closer to what happens in an ordinary interaction. A photograph is a highly controlled stimulus, whereas a real person can move, speak, and change posture.
At the same time, the pony study found that the identity of the person displaying the expression also affected the animals’ behavior. That is an important reminder that horses do not respond to facial expressions in isolation. Experience with particular people and other contextual factors can influence their reactions.
How Horses “Read” Humans
A horse is not limited to one source of information when interacting with a person. Facial expressions are one part of a much larger collection of visual and auditory cues. In a 2018 study published in Scientific Reports, researchers showed horses photographs of happy or angry human faces, followed by positive or negative vocalizations. When the visual and vocal emotional information conflicted, the horses responded differently from when the two signals matched.
The study involved 19 horses, including animals that regularly interacted with their caretakers. The horses looked longer toward the sound source when the facial expression and voice conveyed inconsistent emotional information. They also responded more quickly to inconsistent vocal information. This type of experiment is known as a cross-modal perception test. In simple terms, researchers are asking whether an animal can connect information received through different senses.
Another peer-reviewed study, published in 2019, found that horses could categorize human emotional information using facial expressions and non-verbal vocalizations. Horses responded differently to vocalizations expressing joy and anger and appeared to match visual and vocal information about the same emotional category.
Together, these studies suggest that horses are sensitive to multiple human emotional signals rather than relying exclusively on facial expressions.
Related: 10 Fascinating Animals with Surprisingly Human-Like Behaviors
Are Horses Actually Reading Emotions—or Just Reacting to Signals?
This is where wording matters. Saying that horses “read human emotions” is a useful simple description, but it can imply more than the scientific evidence shows. Researchers cannot directly ask a horse what it thinks an angry face means. Instead, scientists measure observable responses. These can include where the horse looks, how long it looks, whether it approaches or avoids something, changes in heart rate, posture, and other behaviors.
The available evidence indicates that horses can distinguish between human expressions and respond differently to expressions associated with different emotional states. It also suggests that they can combine information from human faces and voices.
That is different from proving that a horse has a human-like concept of happiness, anger, or sadness.
Why Horses May Have Developed This Skill
Horses are naturally social animals, so recognizing meaningful signals from other individuals is important to their everyday behavior. They also have a long history of close interaction with humans. Scientists have therefore investigated whether domestication and regular interaction with people could have contributed to horses’ sensitivity to human signals.
The evidence is not limited to facial expressions. Studies have examined horses’ responses to human voices, body posture, gaze, and other emotional cues. A systematic review of research on horse-human interactions found evidence across multiple studies that horses respond to human emotional expressions through visual, auditory, and other sensory channels.
Evidence also shows that horses can remember information associated with a person’s previous emotional expression. In a 2018 study, researchers showed horses photographs of people displaying either angry or happy expressions. Several hours later, they encountered those people while the people displayed neutral expressions. The horses responded differently depending on the expression they had previously seen from that individual.
That finding adds another layer to the research. Horses may not simply react to an emotional signal in the moment; their previous experience with a person can also shape later interactions.
Related: 10 Extraordinary Ways Animals Have Mastered the Art of Surviving Below Freezing Temperatures
What This Could Mean for Horse Training and Welfare
Understanding how horses respond to human emotional cues could have practical implications for training and welfare. If horses are sensitive to human emotional signals, the behavior of the person handling a horse can shape the animal’s experience. This may matter when researchers and professionals evaluate horse-human interactions, stress, and welfare.
The recent systematic review of horse welfare research identified responses to human emotional expressions among the behaviors studied in horse-human interactions. The review included evidence involving facial expressions, human posture, and vocal cues.
The broader lesson is that horses should not be viewed as animals responding only to explicit training commands. They can process information from the people around them, and scientific experiments increasingly show that some of that information comes from subtle social cues.
Key Takeaways
