Why Do Horses Yawn?

When your horse yawns, what does he really mean? Horses yawn for a variety of reasons. Studies reveal there are several possible reasons: State of drowsiness – perhaps relaxed/relaxation in your horse; but not the same as in humans (drops in blood oxygen levels) Environmental stress or anticipation – herd dominance, social queues, anticipation Gastrointestinal discomfort such as equine ulcers …