Bobcat fever is showing up more often in Kansas, and veterinarians say domestic cat owners shouldn’t wait to take it seriously.
The disease — formally called cytauxzoonosis — is spread through tick bites. Bobcats carry the parasite naturally and typically survive it. House cats don’t fare nearly as well. Without fast treatment, the disease is often fatal.
Cases have been climbing as of late June 2026, with Kansas falling inside the geographic belt where the disease circulates most heavily across the central and south-central United States. Cats that spend any time outdoors are considered at risk — but even cats with limited outdoor access can be exposed if ticks hitch a ride inside on people, dogs, or gear.
Symptoms come on hard and fast. An infected cat may run a high fever, stop eating, become lethargic, and decline within 24 to 48 hours. That window is short. Owners who notice those signs are urged to get their cat to a veterinarian immediately rather than waiting to see if the animal improves on its own.
Tick prevention is the main line of defense — but not every product marketed for pets is safe for cats. Some flea-and-tick treatments approved for dogs are toxic to cats. Veterinarians recommend confirming any product is specifically labeled for feline use before applying it.
No specific case count for Kansas in 2026 had been publicly released as of June 30, and no state agency had issued a formal advisory.
