At one time, our little corner of San Diego had two neighborhood cats, Maine Coon Kuma and black beauty, with speck of white, Lou Lou. They lived in the same apartment complex, separated by one door, and sauntered about and inside each other’s alcove; we and Lou Lou’s owners always left a door open for our indoor-outdoor felines.
Lou Lou tolerated Kuma, at whom she hissed devilishly whenever he approached, swatting as her head pulled back. He never attacked, though, merely invaded her space. Kuma was a gentle giant.