Colorado Rabbits Grow Tentacle-Like Horns Due to Rare Virus

Why Are Rabbits Sprouting Tentacles?

In Fort Collins, Colorado, residents are witnessing a surreal wildlife phenomenon—cottontail rabbits with bizarre, tentacle-like horn growths on their heads. These strange protrusions, which resemble antlers or alien appendages, are caused by the Shope papillomavirus, a virus known to produce keratinized tumors in wild rabbits. [Source]

What is Shope Papillomavirus?

First identified in the 1930s by virologist Richard Shope, this virus is now considered a key link in the history of cancer research. It causes benign tumors on rabbits' heads and faces, especially in summer months when fleas and mosquitoes are most active. [Washington Post]

Is It Dangerous?

Experts confirm the condition is harmless to humans and pets. In most cases, wild rabbits naturally recover, and the growths fall off. However, the tumors can obstruct eating or vision and may occasionally become cancerous in domestic rabbits. [Time]

The Jackalope Connection

The horned appearance of infected rabbits likely inspired the mythical “jackalope.” Historians suggest early sightings of these viral tumors may have seeded the legend of horned rabbits in American folklore.

Public Guidance and Reactions

While the internet has dubbed them “zombie rabbits” and “alien bunnies,” wildlife authorities stress the importance of not touching infected animals. Observing them from a distance is safe and recommended. [Lead Stories]

Summary Table

Sources: Scientific American, Washington Post