Four sheep have been stolen from a smallholding near Northallerton, police said.
Officers are now appealing for witnesses and information.
The sheep were stolen from Great Langton between Sunday, December 1 and Wednesday, December 4.
A spokesperson for North Yorkshire Police said: "We’re appealing for information about any wagons or farm vehicles with a trailer that have been seen acting suspicious in the area.
"Anyone with information should contact North Yorkshire Police on 101 and ask for Tom Gaunt. You can also email tom.gaunt@northyorkshire.police.uk.
"If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.
"Please quote the North Yorkshire Police reference number 12240221184 when passing information."
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