In Finland, most adult horses live in stables where they are kept separate from each other. "Horses are aware of their personal relationships, but they are also able to interpret the relationships between other horses. In addition to adult horses, Koski's research involves young horses between one and three years of age. In trotting races, the track veterinarian only carries out an oral examination if blood is visible in the corners of a horse’s mouth. This applied to only one-fifth of the horses Tuomola examined, even though the mouth injuries of 50 of the horses could be considered serious.
