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Uniquely, the horse is an obligate nasal breather. This makes it a challenge to meet the increased oxygen demand required for maximal exercise, which increases in direct proportion to running speed, requiring the movement of approximately two 5-gallon buckets of air into and out of the horse's lungs every second. The increased demand is further exacerbated when the soft tissues overlying the …

Does your horse shake his or her head excessively while under saddle? It is possible that “headshaking” could be the problem! Also known as trigeminal nerve-mediated headshaking, it is a disease that occurs spontaneously and consists of behavior changes such as throwing of the head in horses. Other presentations include snorting, rubbing of the muzzle, and sneezing... all without an ap …

When you look at the respiratory system of a horse and human side by side, you may struggle to spot any significant differences at first glance – both include structures such as the nostrils, nasal passages, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli. However, while our basic respiratory structures and functions may seem to parallel one another, one considerable difference s …