Here's why they might be doing it:
* Natural instinct: Horses are naturally inclined to urinate in their territory. This helps them mark their space and communicate with other horses.
* Hydration: Horses need to urinate to get rid of excess water they've consumed.
* Stress or excitement: Some horses might urinate more frequently if they are stressed or excited, such as when a new horse arrives or during a competition.
* Medical conditions: In rare cases, excessive urination could be a sign of a medical condition, like urinary tract infection or kidney disease.
So, unless your horse is urinating excessively, frequently, or showing other unusual symptoms, it's likely just a normal behavior.
However, if you are concerned about your horse's urination habits, it's always best to consult with your veterinarian.