DEA warns of fentanyl laced with an animal tranquilizer showing up in Michigan

The Drug Enforcement Agency in metro Detroit is putting out an alert about the dangerous synthetic drug fentanyl, which is 50 times stronger than heroin. It's now being mixed with xylazine, which is an animal tranquilizer. It's so powerful that just .10 ml can fully knock out a 1,000-pound cow.