Churchill Downs said it has suspended Hall of Fame trainer Bob Baffert following the postrace drug test that has put his horse's win in jeopardy.
A color run on skis, Democrats in South Carolina and Japanese wrestling round out this week's best images.
"It looked like a battleground for just horses," said Floyd County Sheriff John Hunt.
The Saturday death of a 3-year-old gelding occurred less than two weeks ahead of the Breeders’ Cup world championships, which the track is scheduled to host.
A lawyer says another horse crowded Maximum Security and may have clipped him, forcing the initial winner to "jump out of the way."
Fallon Danielle Blackwood was arrested in Alabama after multiple horse owners said they put their animals in her care only for them to disappear.
Out Side In pairs thoroughbreds with therapy patients to give both purpose.
The unusual incident was caught on the French watering hole’s security camera.
The state's famous herd animals know how to take care of themselves, experts say.
The lead illustrator for "BoJack Horseman" discusses her new graphic novel and her upcoming Netflix show starring Tiffany Haddish and Ali Wong.