* Horses are herbivores: Their diet primarily consists of grasses, hay, and grains.
* Celery is not a typical horse food: While celery is safe for horses in small amounts, it's not a significant source of nutrients they need.
* Individual preferences: Just like humans, horses have their own taste preferences. Some might find celery appealing, while others might not.
It's best to stick to a horse's balanced diet of hay, grain, and treats specifically formulated for them. If you're unsure about offering anything new, consult your veterinarian.