Northamptonshire Police is investigating the deaths of two lambs found dead in a field in the south of the county
One lamb was found dead in a field off Litchborough Road, Foxley, on Saturday, April 11 and another was found in the same location the following day.
Tests carried out on the animals have suggested they may have been killed by humans, rather than by other animals.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org