Some people train their dogs to attack and kill cats. Fighting Part II - Believe it or not, cats can kill each other during their fights. FELV - Feline Leukemia destroys a cat's immune system. It is transmitted through body fluids. Even a sneeze can pass the virus from one cat to another.
Cats infected usually die within two years.
FIV - Feline Immunosuppressive Virus also destroys a cat's immune system. It is transmitted through body fluids and cuts a cat's lifespan in half. FIP - Feline Infectious Peritonitis. Tests and vaccines for FIP are not reliable. Starving to Death - People think that because they have lived in the same house for a number of years that their cat is too smart to wander off and get lost.