Rabbits in Fort Collins, Colorado, have been spotted with horn-like growths caused by the Shope papillomavirus. While the viral photos have led to nicknames like "Frankenstein bunnies," the virus is relatively harmless to rabbits and doesn't affect humans or pets. The virus, discovered in the 1930s, has contributed to understanding the link between viruses and cancer. Colorado Parks and Wildlife says these sightings aren't uncommon, particularly during warmer months when the virus spreads via fleas and ticks. The growths typically disappear once the rabbit's immune system fights off the infection.

Prepared by Olivia Bennett and reviewed by editorial team.