Story perspectives
Colorado Rabbits Develop Horns from Rare Virus Outbreak
8/28/2025
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Story summary
- Wild rabbits in Colorado are developing horn-like growths from the Shope papilloma virus, transmitted by mosquitoes, ticks, and fleas.
- This condition is benign and does not affect humans or other animals.
- Similar cases have been reported in Minnesota and Nebraska.
- The virus, identified since 1933, can cause cancer in domestic rabbits.
