Before each race all horses have their identities verified by checking the unique ID number that's tattooed on the inside of their upper lip, since names are easy to change but a tattoo is a little tougher...
... and that's what they're doing in this photo taken at Pimlico. It's not a particularly flattering angle, so in the spirit of fairness here's the same horse, on a different day, photographed under much better circumstances.