Bite wounds inflicted from other animals can become infected very quickly. Cats get into fights with other cats mostly at night. Common sites of cat fight injuries include the ears, head, and base of the tail. Severe skin infections and viral diseases such as feline leukemia and feline immunodeficiency virus (FIV) can spread among cats through bite wounds. Bite wounds inflicted by cats however have the potential to cause severe internal organ damage. Therefore, if you see or think your pet may have been bitten or in a fight, seek veterinary attention immediately. Animals can also transmit life threatening zoonotic diseases (spread of disease from animals to people) through bites such as rabies.