Colorado and Washington Rabbits Grow Horns and Tentacles, Dubbed 'Frankenstein' Bunnies

Wild rabbits in Colorado are developing horn-like growths caused by the Shope papilloma virus, a benign summer virus spread by insects, which does not pose a risk to humans or pets. Most infected rabbits survive and recover, with the growths eventually disappearing, and there is no need for intervention unless the growths impair the rabbit's ability to eat or drink.