Residents in northern Colorado have reported unusual sightings of wild rabbits with black, horn-like growths and tentacle-like protrusions on their faces — some dubbing them “Frankenstein rabbits.”
According to Colorado Parks and Wildlife (CPW), the condition is caused by Shope papilloma virus (SPV), a disease that produces wartlike, waxy growths on the heads and necks of cottontail rabbits. Spread by biting insects such as fleas and ticks, the virus appears more frequently during summer in states including Colorado, South Dakota, Minnesota, and Texas.
Kara Van Hoose, CPW spokesperson, explained that while a dozen sightings have been reported in the past week, it is likely the same small group of infected rabbits being spotted multiple times. SPV poses no risk to humans or most other animals, but domestic rabbits housed outdoors could be vulnerable.
Infected rabbits typically remain healthy unless the growths interfere with their ability to eat or drink. CPW advises against euthanizing these animals and recommends keeping pets and people at a distance.
If a dead rabbit is found on private property, officials say it is safe to handle the carcass while wearing gloves. There is no rehabilitation available for wild rabbits with SPV, and Animal Control will not intervene unless the animal appears severely compromised.