Photos of the cottontails inspired nicknames like “Frankenstein bunnies,” “demon rabbits” and “zombie rabbits.” ...

Local residents described the rabbits as having “black quills or black toothpicks” growing out of their faces.

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

Rabbits infected with the Shope papilloma virus have growth on their heads and faces resembling “horns and tentacles.” ...