Feline leukemia virus (FeLV) is a highly transmissible infectious disease in cats. Retrovirus causes FeLV, which compromises the immune system that eventually leads to its total collapse. Cats that have FeLV are highly likely to suffer from cancer and other severe diseases. How do cats acquire FeLV? Cats are also the primary source of FeLV. Cat-to-cat transmission spread can occur when cats share feeding bowls or litter boxes. The virus passes through body secretions such as saliva, urine, and feces. A cat exposed to another cat infected with FeLV for a prolonged period is at greater risk to get infected as well. An infected mother cat may likewise pass FeLV along to her kitten while in utero before it is born or while nursing. If you notice your cat showing any symptoms of an illness or experiencing deteriorating health, bring your pet to your animal hospital Cherry Hill, NJ for a proper diagnosis and treatment.