Cat FIV: Living Well with Feline Immunodeficiency Virus

FIV-positive cats are frequently euthanized in shelters due to misunderstanding of the disease, despite being able to live long, healthy lives.

Key Facts

FIV affects approximately 1-3% of domestic cats globally
FIV is not easily transmitted — it primarily spreads through deep bite wounds, not casual contact
FIV-positive cats in low-stress indoor environments often live normal lifespans of 10-15+ years
The virus cannot be transmitted to humans or dogs — it is a cat-specific lentivirus
Historically, FIV-positive cats were routinely euthanized in shelters; this practice is now being revised
FIV cats require regular veterinary monitoring but often live asymptomatic lives for many years

Welfare Considerations

FIV-positive cats face discrimination that is not supported by current evidence. The historical shelter practice of automatic euthanasia for FIV-positive cats has caused millions of preventable deaths. Modern feline medicine recognizes that FIV cats can coexist safely with FIV-negative cats when neutered and living indoors together, as non-aggressive cohabitation rarely transmits the virus. The main welfare concern is ensuring FIV-positive cats receive appropriate veterinary monitoring and are not kept in stressful, overcrowded environments that accelerate immune compromise. Adoption of FIV-positive cats has major welfare benefits for shelter populations.

What You Can Do

Consider adopting an FIV-positive cat — they make wonderful pets with minimal special requirements
Educate friends, family, and shelter volunteers about FIV transmission facts to reduce stigma
Advocate for your local shelter to adopt an evidence-based FIV policy that avoids automatic euthanasia
Provide FIV-positive cats with indoor housing, regular vet check-ups, and a low-stress environment