Feline Immunodeficiency Virus (FIV) is a viral infection that affects cats, weakening their immune systems. It is primarily transmitted through bite wounds, making outdoor and unneutered male cats more susceptible. Infected cats may not show symptoms for years, but they can develop various health issues over time, including dental disease and infections. There is no cure for FIV, but infected cats can live long, healthy lives with proper care. Regular veterinary check-ups, a balanced diet, and a stress-free environment are essential for managing the condition. Vaccines are available to help prevent FIV, but they are not 100% effective.