Police are investigating an apparent case of sabotage after seven pedigree sheep were daubed in red paint.
Seven of Iain Barbour's sheep were painted red
Just days before showing his sheep at the Royal Highland Show in Ingliston, farmer Iain Barbour discovered some of the flock had been spray-painted.
The Suffolk sheep had also been released from a field at his farm near Annan, Dumfriesshire.
Mr Barbour said he was "horrified" - but had the last laugh when one of his flock ran out a prize winner.
Mr Barbour and his sister Judith tried to remove the paint with thinners and graffiti removal paint, although a slight tinge remained.
"We have tried everything on them," he said. "It's just a shame that this has happened.
"Everyone in farming knows that this is the biggest show and that everybody wants to go to it.
"For someone to do this to my sheep is the lowest of the low, it really is.
"I am horrified and shocked that somebody could stoop to this level to ruin our show."
Police are investigating the incident, which happened on Tuesday night.
The show, now in its 165th year, got under way on Thursday.
It is expected to attract 150,000 people and is worth about £67m to the Scottish economy.
As well as showing off the country's finest livestock it is also a showcase for the best of Scottish food.