The growths are most likely caused by a summertime virus common in some U.S. states, but wildlife officials say there is no ...

The grotesque “Frankenstein”-esque rabbits — once just a Colorado curiosity — are now turning up in Minnesota and Nebraska, ...

A group of rabbits in Colorado with grotesque, hornlike growths may seem straight out of a low-budget horror film, but ...

Fort Collins residents spot cottontail rabbits with hornlike growths, dubbed "Frankenstein bunnies," caused by Shope ...

Officials say there is nothing to worry about and explained why the rabbits have hornlike growths on their heads.