Lancashire police have called for witness information after a spike in the number of rural crime reports.
A particular warning has been heightened after two separate incidents of stolen sheep and lambs in the Lancashire area.
22 in-lamb pure Beltex and Beltex cross sheep were stolen from Hapton, Burnley shortly before the theft of 57 lambs from pastureland in Feniscowles, Blackburn earlier this week.
The Beltex sheep were marked with blue rumps while the lambs were marked in red on the right flank and tagged with flock number 180911.
Police said they also received a surge in reports from around the county of dog worrying attacks on sheep and lambs, usually at dusk or during hours of darkness.
Inspector Anthony Ford said: “If you have any information regarding the stolen sheep please call 101 and quote the relevant log reference number.
“You can leave information for the police anonymously by contacting Crimestoppers on 0800 555 111.
“Please be vigilant in rural areas and report any suspicious activity to the police at once.”