Foolish Treasure is in the care of the South Florida SPCA.
The latest thoroughbred was taken in by the SPCA on Saturday, after responding to a call from the Miami-Dade Police Department/Agriculture Patrol.
The horse was straying in SW Miami-Dade (SW 195 Ave. and SW 202 St.).
The horse, identified by her tattoo, is named Foolish Treasure.
She is in stable condition at the charity's rescue ranch.
Foolish Treasure ran her last race at Tampa Bay Downs Racetrack in 2008. "After 2008, she falls off the radar," South Florida SPCA president Jeanette Jordan said.
"I'm just glad we got to her in time before she was hit by a car or starved to death."
She continued: "With over 50 horses at the rescue ranch right now, we could use the public's help to provide food and veterinary care for them."
Donations can be made at www.helpthehorses.com or sent to SFSPCA, 15476 NW 77 Court, #440, Miami Lakes, FL 33016.