What type of animal is most affected by Feline Leukemia Virus (FeLV)?

Feline Leukemia Virus (FeLV) primarily affects cats, making them the most susceptible species to this virus. FeLV is a retrovirus that can lead to severe health issues in infected cats, including immunosuppression, anemia, and increased susceptibility to other infections and diseases. The virus is transmitted through saliva, blood, and other bodily fluids, often through interactions such as grooming, or from mother to offspring during birth or nursing.

The nature of FeLV's impact on cats is significant because it can cause chronic infections and lead to a reduced lifespan if not managed properly. In contrast, dogs, birds, and rabbits have different diseases and viruses that affect them but are not susceptible to FeLV in the same way that cats are. Understanding the specific host range of various viruses helps veterinary professionals provide appropriate care and preventative measures for different animal species.