So I always believed that a calico cat was primarily white, with solid, defined patches of other colors, usually black and red. A tortie has a black base coat and brown and orange sort of brindle pattern with no defined patches of color (other than maybe the face and legs, from what I've seen). So what do you call a cat that has tortie coloring and also some white patches? My coworker keeps saying it's a calico, but in other areas of the world they'd term it a torbie and white. In our shelter system I keep labeling it just as a tricolor, and my coworker keeps changing it to calico Needless to say, what is the difference between calico, tricolor, and a tortie? And what would YOU call a cat with white patches and tortie patterning?