rare color?

Tortoiseshell cats are named for their distinctive coloring – a combination of patches of black, brown, amber, red, cinnamon and chocolate. The size of the patches varies from a fine speckled pattern to large areas of color. The term “tortoiseshell” is used for cats with brindled coats that have few or no white markings. Cats of this coloring with larger areas of white fur are called calicos. Sometimes, these colors present in lighter versions such as lilac or cream. Torties with this lighter coloring are called dilute torties. Occasionally, the typical tortoiseshell colors are also seen in a tabby (striped) pattern, and these cats are sometimes referred to as “torbies.”

Tortoiseshell cats are almost exclusively female. Tortoiseshell and calico coats are the result of the interaction between genetic and developmental factors. The occasional and very rare male tortoiseshell cat is the result of a genetic mutation.