A man took eight calves from the Fauquier Livestock Exchange in Marshall, Virginia, last week, according to the Fauquier County Sheriff's Office.
Surveillance video shows a man driving a silver or gray Dodge pickup truck with an aluminum gooseneck trailer.
He was wearing a black sweatshirt, jeans, dark shoes, a black ski mask and white gloves.
The calves have distinctive markings.
Anyone with information about the incident should call the sheriff at 540-347-3300.