Feline infectious peritonitis (FIP) was once universally fatal. The development of effective antiviral treatments represents one of the most significant welfare advances in feline medicine in decades.
The transformation of FIP from a universally fatal diagnosis to a treatable disease is a genuine welfare success story. Thousands of cats that would previously have been euthanized within weeks now achieve remission and full recovery. However, access to treatment remains unequal: antivirals are expensive, not yet licensed in many markets, and often obtained through veterinary compounding or import pathways. Advocacy for licensed, accessible FIP treatment is an important welfare goal. Owners who receive an FIP diagnosis should immediately consult a specialist and explore treatment options before accepting a palliative course.