Orange sheep: Farmer dyes sheep to stop theft
14 April 2011 Last updated at 09:33 BST
Big increases in lamb prices have led to a 500% jump in reported thefts of livestock, according to the agriculture insurance specialists NFU mutual.
One Dartmoor farmer has had enough and has come up with a unique and eye-catching solution to stop his sheep from being stolen.
The BBC's Louise Hubball went to find out more.