Feline Immunodeficiency Virus (FIV)

Sassy - FIV+ CatFeline Immunodeficiency Virus, or FIV, is a lentivirus that weakens the immune system of cats, very similar to HIV in humans. A lentivirus is one that has a long incubation period – meaning that a cat may be infect with FIV for a long time, even years, before actually exhibiting any symptoms or being affected by the virus. Like HIV, FIV attacks a cat’s immune system, making it difficult for the infected cat to fight off infection. A simple cold, if left untreated, could possibly progress into something more serious. (Read more about this disease in our article The Ins & Outs of FIV.)

Should I just euthanize an FIV+cat? ABSOLUTELY NOT!
Can FIV+ cats live a normal and healthy life? YES!
Can an FIV+ cat live with an FIV- cat? YES!

Feline Immunodeficiency Virus is an often misunderstood disease. We have written several articles on the virus and things related to the virus, and we hope you will check them out so you can learn more. Spreading awareness and educating others about this disease is so very important for the lives of FIV+ cats.

FIV Resources

Catwork’s “Real-Life” FIV Project – please visit to read about the project and to add your FIV+ kitty to the database!
Catwork’s Cat-alogue of FIV+ cats who are living healthy and happy lives!

Related Articles

The Ins & Outs of FIV      The FIV Vaccine: What You Need to Know