The large size of a horse means that their skin covers a large surface area, often making skin problems easy to see. However, although we can see them, we cannot always easily identify their cause. We teamed up with Dr. Stephen White, DACVD, UC Davis professor and chief of the veterinary hospital’s Dermatology Service, to bring to light some things you might not know about equine dermatology.

Grooming is an enjoyable way to bond with your horse, and most horses love to be fussed over, but cleaning a male horse’s sheath is an unpleasant chore that owners and riders tend to avoid. From potentially being kicked, to lack of knowledge or squeamishness, those with geldings and stallions often shirk the task altogether. However, veterinarians agree that cleaning and inspecting a horse’s sheath is a necessary and regular part of maintaining their health.

Recent research shows that increasing parental age at conception has a detrimental effect on race speed. When a split-second can separate the horses at the end of the race, the slightest advantage can give the winner the edge. Research from the University of Exeter found that the speed of Thoroughbred horses declines as the age of their parents when they were conceived increases.

The morning grass is glittering with light. Moisture drops in crystals from bushes and trembles in the trees. The air is still and cool. After an early lesson, I invite my dressage coach in for coffee and pull my riding boots. He removes his shoes and stands looking out the window. “Are those both stallions?” he asks.