I've heard it all now: Shaving racehorses for aerodynamic improvements?

Believe it or not, as I prepare to leave for a dinner meeting, the NPR topic on the radio at this moment is a discussion of whether a racehorse has ever been shaven to improve speed.

The expert consulted said “Probably not”, as changing the appearance of a horse is discouraged and such a horse would be susceptible to sunburn.

I am posting this topic for no other reason than the mental image of a shaved racehorse possibly amusing someone.