Fort Collins, CO — Recent viral photos of rabbits with horn-like black growths on their heads and faces have stirred alarm — and plenty of social media jokes about “zombie rabbits” — but wildlife officials say the condition is caused by a rare virus harmless to humans and pets.
The Shope papilloma virus, spread between rabbits via insect bites, produces wart-like nodules that can elongate into tentacle- or horn-shaped protrusions. While the growths may look alarming — sometimes obstructing a rabbit’s eyes or mouth — they do not infect people, dogs, or other wildlife, according to Colorado Parks and Wildlife (CPW).
Kara Van Hoose, CPW spokesperson, said the agency has received multiple reports from Fort Collins residents since the images began circulating online. She emphasised that most infected rabbits survive the illness, and the growths can disappear naturally over time.
Authorities recommend avoiding contact with affected animals and only considering euthanasia if the growths prevent a rabbit from eating or drinking.
On social media, reactions ranged from light-hearted — “This is how the zombie virus starts” — to concerned calls for intervention. Wildlife experts say the best approach is observation from a safe distance and allowing nature to take its course.
