White Spotting on Black Tortie Pattern

This is how the white spotting pattern affects the black tortoiseshell pattern. Tortie cats with little or no white spotting have small, intermingled patches, but the higher the grade of white spotting, the more distinct and larger the patches. Tortoiseshell cats with mid grade (5 and 6) and high grade (7, 8, and 9) forms of white spotting are called calicoes in the US.