World champion Black Caviar retired

MELBOURNE, April 17 AAP - Champion racehorse Black Caviar has run her last race, ending her career with 25 wins from as many starts.

Trainer Peter Moody made the shock announcement which comes just days after her brilliant win in the TJ Smith Stakes at Randwick.

"It's the right time to call it a day on what's been a wonderful career of one of the finest horses we have ever seen," trainer Peter Moody said.

"We thought long and hard about racing on for another season. We thought about Royal Ascot, we thought about Brisbane and we thought about Adelaide but we believe she has done everything we've asked her to do.

"She couldn't have possibly done any more."

Moody said Black Caviar's 2013 campaign which also netted wins in the Lightning Stakes and William Reid Stakes, had been a bonus after her Royal Ascot win last year took a heavy toll on the mare.

"We got three more runs than we thought we were ever going to have," he said. "We thought she would be retired post-Ascot.

"But we've been fortunate to bring her home here and I think the owners are to be congratulated on allowing me to race her on and give the Australian public three more opportunities to see her."