* Weather: Hot weather and exercise make horses thirstier, leading to more frequent drinking.
* Diet: Horses that eat dry hay or concentrate will drink more than those eating lush pasture.
* Individual horse: Some horses are naturally thirstier than others.
* Access to water: If water is always available, horses will drink throughout the day, rather than in large amounts at specific times.
However, it's important to note:
* A horse should always have access to fresh, clean water.
* Horses should drink at least 10-12 gallons of water per day, but this can vary depending on factors mentioned above.
* Signs of dehydration in horses include lethargy, dry nose, sunken eyes, and reluctance to move.
If you're concerned about a horse's water intake, it's best to consult with a veterinarian.