Experts Issue Warning As Infected ‘Zombie’ Squirrels Spotted In US

Wildlife specialists are warning Americans after disturbing images of squirrels covered in wart-like lumps began circulating online. Dubbed “zombie squirrels” by shocked viewers, these animals have been seen in several states, sparking fear and confusion.

Squirrels are usually seen as playful backyard visitors, but their usual charm has been replaced with unease. Photos showing animals with grotesque growths have unsettled many who are used to seeing them as harmless woodland creatures.

The alarm grew when a Reddit user shared a photo on July 31 of a squirrel with a large mass on its face. At first mistaken for food, it turned out to be part of the animal’s body. Online users quickly labeled it a “zombie squirrel.”

Experts explained that the condition is not new, but a viral illness called squirrel fibromatosis, or squirrel pox. Spread mainly where squirrels gather, especially near bird feeders, the poxvirus causes fibrous, tumor-like growths across the body. Most recover naturally, though severe cases can be fatal.

Importantly, wildlife officials emphasize that squirrel pox poses no risk to humans or pets. Still, they advise against touching infected animals, since handling can cause stress or injury. Botfly larvae can also cause similar swollen lumps, adding to the “zombie” appearance.

Social media has amplified fears, just as it did with rabbits suffering from papilloma virus earlier this year. Viral images spread quickly, fueling sensational terms and public alarm.

Experts recommend keeping a safe distance, reducing backyard feeders during outbreaks, and allowing nature to run its course. While the appearance is shocking, most infected squirrels continue normal activity and often recover.