Cat FIV: Living with Feline Immunodeficiency Virus

FIV-positive cats can live long, comfortable lives with appropriate management, yet face unnecessary euthanasia and abandonment due to misunderstanding of the condition.

Key Facts

Feline immunodeficiency virus affects approximately 2-4% of cats in the UK and USA
FIV is species-specific — it cannot be transmitted to humans or other non-feline species
Transmission primarily occurs through deep bite wounds — the main risk is between unneutered males fighting
Many FIV-positive cats live for years with normal quality of life before showing immune compromise
FIV-positive cats can be safely housed with FIV-negative cats if both are neutered and non-aggressive
Secondary infections rather than FIV itself cause clinical illness — proactive veterinary care reduces risk

Welfare Considerations

The welfare of FIV-positive cats is significantly compromised by misinformation leading to unnecessary euthanasia and abandonment. The condition is manageable in most cases, with affected cats leading comfortable lives for many years. Shelters that routinely euthanise FIV-positive cats on the basis of diagnosis alone are making welfare decisions not supported by current evidence. Neutering to prevent transmission through fighting bites is the most effective population-level management strategy.

What You Can Do

Consider adopting an FIV-positive cat from a shelter — they are often overlooked despite good welfare potential
Neuter your cat to dramatically reduce FIV transmission risk from fighting
Ask your shelter about their FIV testing and management policies
Share accurate FIV information with other cat owners to counter myths about the condition
Support rescue organisations that provide accurate information and adoption support for FIV-positive cats