Raiders broke into a farm shed and brutally slaughtered a young calf and sheep, possibly to sell on their meat.
West Mercia Police is appealing for information on the attack, which happened sometime between 9pm on Saturday 11 February and 8am on Tuesday 13 February.
Officers said the burglary took place at a farm in Redhill Lane, Rubery, on the outskirts of Birmingham.
A Hereford heifer calf was taken away from its mother and five other cows and had its throat slit, while a ewe was dragged from a field from a neighbouring farm and slaughtered.
‘Killed for their meat’
A police spokesman said: “This was a sickening incident that would have undoubtedly caused a lot of suffering to the two animals.
“It is likely the animals have been killed for their meat.”
Officers are keen to speak to anyone with information or CCTV, or who saw anything suspicious in the area around the time of the attack.
Anyone who is being offered cheap meat locally is also being asked to contact police.
If you have information contact West Mercia Police on 101 or Crimestoppers anonymously on 0800 555 111, quoting incident number 0130S 130218.