The growths are most likely caused by a summertime virus common in some U.S. states, but wildlife officials say there is no risk of transmission to humans or other animals.

As weird and concerning as they appear, the virus that causes the dark, wart-like horns or tentacles to grow on cottontail rabbits is relatively common and usually not anything to worry about, CPW

A parade of so-called “zombie” rabbits sporting hornlike growths has sparked confusion and concern in Colorado. Wildlife officials say there’s no cause for alarm. These unusual creatures are simply living with a harmless,