Here's why a horse's coat might seem thin:
* Breed: Some breeds of horses have naturally thinner coats than others. For example, Thoroughbreds and Arabian horses tend to have finer coats than draft breeds like Clydesdales or Percherons.
* Climate: Horses in warmer climates tend to have thinner coats than those living in colder regions.
* Season: Horses shed their winter coats in the spring and grow a thicker coat in the fall. During shedding season, their coats can look thinner.
* Nutrition: A horse's diet can also affect coat thickness. A horse that is not getting enough nutrients, especially protein and minerals, may have a thinner coat.
* Health: Certain health conditions can also cause a horse's coat to be thinner, such as parasites, hormonal imbalances, or certain diseases.
If you are concerned about a horse's coat being thin, it's best to consult with a veterinarian to rule out any underlying health issues.