08/16/2025
Thanks goes to Diana Leggett, a long term wildlife rehabber tells us about growths on cottontails!
"Let’s chat about the Papillomavirus (Shopes) that seems to be making the rounds in the news cycle of late. Here’s a bit of info from Google as it’s important to know where it is usually seen:
“The papillomavirus is seen in the Midwest and eastern United States, with current sightings of infected rabbits in Colorado, Minnesota, and Nebraska, though it has historically occurred in other states and can range from Mexico to Washington state. This virus, known as Shope papillomavirus or cottontail rabbit papillomavirus, causes wart-like growths, often on the heads of wild cottontail rabbits, and spreads through bites from fleas, ticks, and mosquitoes.”
This virus is most usually spread by mosquitoes just like myxomatosis. It is not fatal to the rabbit. The “warts” or “tentacles” will fall off in about three months. Is it disturbing looking? Of course it is. Does it harm the rabbit? Yes, if it gets in the eyes or nose or mouth. Is it transferable to humans? No, it is not a zoonotic. And be thankful about that one! We see this every year in certain areas of the country, but I have to say the tentacles seem to be a lot more prominent than we’ve seen in the past.
So a word about Shopes. Of greater concern is the morphing of a Shopes fibroma from a myxomatosis infection, (also spread by mosquitoes). Over the last 10 years I’ve witnessed wild and domestic rabbits that have come into the rescue with myxomatosis tumors often morph into a Shope fibroma, which is a cancer. Usually tentacles, warts and blood filled cysts dry up and fall off in about three months or so after their cycle is finished.
Is it creepy looking? Yes, it is. Do we see it down here in North Texas? Rarely. But with climate change, I’m seeing more and more interesting and strange events with animals.
If you see a wild rabbit with any of these “horns” or “tentacles”, do, please text me at 940-442-8289 so that I can add it to my map of unusual wild rabbit diseases."
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