Horses cannot vomit like other animals
Horses' inability to vomit, due to their specialized stomach and esophageal structure, protects them from regurgitation but significantly increases risks from toxins or overeating.
Unlike humans or dogs, horses cannot vomit due to their unique anatomy. Their esophagus connects to the stomach at a sharp angle, reinforced by a powerful muscle that stays tightly closed. This design likely evolved to suit their grazing lifestyle, where they eat small amounts frequently, reducing the need to expel food upwards. This means if a horse eats something harmful, it can't easily get rid of it, which can lead to life-threatening conditions like colic. Colic affects about 10% of horses annually and is a leading cause of death. Interestingly, newborn foals can vomit for a short time after birth, losing this ability as they mature.