Just like dogs and cats, horses too can be allergic. Allergies in horses are often caused by insects, weed, grass and tree pollens. Other allergic triggers are dust mites, foods and molds contained in damp hay or straw.
Horse allergy symptoms
Horse allergies are often associated with respiratory symptoms such as coughing, raspy breathing and slight exercise intolerance. As the allergic condition advances, the coughing becomes more progressively frequent and deeper. Runny nose and watery eyes are often early signs of allergies. Dermatological symptoms are also common. These include itching, recurrent hives or small flat-topped bumps (wheals), patchy hair loss due to excessive rubbing or crusting.