You know your horse, and when something's "off," you pick up on it in a hurry. You plan on entering an event at the end of the month and he needs to be at peak performance because the competition is going to be tough.
How many times have you noticed dust motes dancing in a shaft of sunlight spilling through your barn window? To a photographer, it's a tranquil moment waiting to be captured. But those dancing particles can be a constant source of airway irritation to the horses in that barn.