Somerset-based trainer Paul Nicholls said Kauto Star, whose participation in the Gold Cup was in jeopardy following a schooling fall a fortnight ago, had returned from the race unscathed.
He said: "He's absolutely fine.
"Ruby wasn't happy after he'd jumped a couple of fences and we said if he wasn't happy to pull him up, and he's done the right thing.
"There's obviously something tweaking him."
Synchronised ridden by A.P McCoy won the 2012 Gold Cup in style at Cheltenham. It was not to be a fairytale ending for Kauto Star though who was pulled out of the race by jockey Ruby Walsh minutes after it began.
Kauto Star failed to finish the 2012 Cheltenham Gold Cup after jockey Ruby Walsh pulled him up minutes into the race. The 12 year old looked to be struggling less than halfway round the track. Despite his exit he was give a huge round of applause as he passed the grandstand.
The owner of Kauto Star, Clive Smith has told us he's looking forward to the race and despite being around 60 in human years say Kauto could still cause a surprise in the Gold Cup at Cheltenham this afternoon (Race begins at 15.20)
From our Gloucestershire Correspondent Ken Goodwin:
It's the final day of the Cheltenham Festival and it's Gold Cup day. The big race is at 3:20pm this afternoon, where all eyes will be on Kauto Star to see if he can win it for the third time.
Cheltenham Festival is celebrating its own St Patrick's Day, 2 days early.
The big race of the day is the Ladbrokes World Hurdle at 15.20. Big Bucks, trained by Paul Nicholls is bidding to win it for the fourth time in a row and equal the record of 16 consecutive wins over hurdles set in the 1950s.
Kauto Star could win a third Gold Cup this Friday, putting him in the history booksRead the full story ›
Animal rights protestors held a demonstration outside the Cheltenham Festival today - the day after three horses died there. They were destroyed after breaking legs while racing. Post mortem examinations will be carried out and officials say they'll look to see if any lessons can be learnt.