We've had both males and females, with mixed results in both. My three most recent cats have all been female and all were extremely affectionate. One of them was my constant companion from the time I rescued her from the campground at the park I work at. She was the most inept hunter I have ever known. Our current cat is also extremely affectionate, but I have the feeling she is a natural-born killer. Fortunately for the small feathered and furred set, she is an indoor kitty, forever relegated to watching from the other side of the glass.