Companion Animals

Feline Immunodeficiency Virus and Welfare

FIV is a common viral infection in outdoor cats that affects immune function, and management of FIV-positive cats has significant welfare implications.

Key Facts

FIV affects an estimated 4% of cats globally and higher rates in feral populations
The virus is transmitted primarily through deep bite wounds during territorial fights
FIV-positive cats can live long, healthy lives with good management
Secondary infections from immune suppression are the primary welfare concern
Neutering and indoor management reduce FIV transmission risk significantly

Welfare Considerations

FIV-positive cats that are well managed often have excellent quality of life for years. The virus itself is not a death sentence, but secondary infections from immune compromise can cause significant suffering without appropriate veterinary monitoring. Many FIV-positive cats are unnecessarily euthanised due to outdated perceptions about the condition. Education of owners and veterinarians about FIV management can substantially improve welfare outcomes.

What You Can Do

Test cats for FIV before introduction to multi-cat households
Manage FIV-positive cats indoors to reduce secondary infection risk and prevent spread
Seek regular veterinary monitoring for FIV-positive cats to catch secondary problems early
Never euthanise a healthy FIV-positive cat based on diagnosis alone
Support FIV welfare education campaigns for veterinarians and cat owners