British scientists conducted an experiment and found that domestic horses are distinguished joyful or angry facial expression in humans, reports the BBC.
Scientists from the University of Essex came to this conclusion, 28 showing the horses photos of people. The experiment was conducted in the stable. One of the researchers held the horse, and the second at this time the animal was shown a picture of a person.
When the horse showed a picture of a person with an angry expression, animals showed a negative reaction. Horses also hooked up to monitors, and found that angry individuals in animals heartbeat quickens.
It is reported that a particularly strong horses reacted to the expression on their faces when looking at pictures of left eye. It is known that the image seen by the left eye is processed by the right hemisphere of the brain.
A similar experiment was earlier conducted with dogs, and brought identical results.