A tick-borne parasitic infection known as bobcat fever is spreading across the U.S., posing a lethal threat to domestic cats [2, 3].

This emergence is critical for pet owners because the disease can be fatal to a pet within a matter of days [1]. The rapid onset of the illness leaves little room for delayed veterinary intervention once a cat has been infected.

Entomologist Sonja Swiger said the disease is transmitted when ticks feed on bobcats and subsequently bite domestic cats. "It's a parasite, carried in the blood of bobcats, and it's picked up by ticks, and it can be transmitted to domestic cats," Swiger said [1].

The infection has been primarily detected across the eastern U.S. during the summer of 2024 [2, 3]. However, the geographic reach of the parasite is expanding, with confirmed cases now reported in domestic cats in Oklahoma [2].

Bobcats act as the primary reservoir for the parasite, carrying it within their bloodstream. Ticks serve as the vector, transporting the parasite from the wild feline population to household pets [1, 2]. Because the transmission occurs through a simple tick bite, any domestic cat with access to the outdoors, or areas where bobcats roam, is potentially at risk.

Veterinary experts and entomologists said the importance of tick prevention is key to mitigate the risk of transmission. While bobcats are the source, the tick is the active agent that brings the parasite into the home environment [1].

“The disease can be fatal to a pet within a matter of days.”

The spread of bobcat fever from the eastern U.S. into states like Oklahoma suggests a widening geographic footprint for the parasite. This indicates that domestic cat owners in diverse environments must prioritize tick prevention, as the presence of wild bobcats in suburban or rural areas can introduce lethal pathogens into the local pet population.