 When cats become aggressive , they try to make themselves appear larger and more threatening by raising their fur , arching their backs , turning sideways and hissing or spitting . Often , the ears are pointed down and back to avoid damage to the inner ear and potentially listen for any changes behind them while focused forward . They may also vocalize loudly and bare their teeth in an effort to further intimidate their opponent . Fights usually consist of grappling and delivering powerful slaps to the face and body with the forepaws as well as bites . Cats also throw themselves to the ground in a defensive posture to rake their opponent 's belly with their powerful hind legs . 
