The coats of these patched felines have a very distinct tabby pattern all over their bodies. However, the tabby pattern will not appear on the white fur. And remember that tortoiseshell cats have very little or no white fur to begin with.
Interestingly enough, most tortoiseshell tabbies -just like calicos and torties- happen to be female, and it all has to do with genetics.
It is important to note that the tortoiseshell tabby is a color pattern and not a specific cat breed.
Torbies are beautiful felines. Indeed, they look like walking works of art. And they absolutely make great companions.
Color variations
Tortoiseshell tabbies, just like "regular" torties and calicos, come in different color patterns. These are the most common combinations:
Undiluted Patterns
--Brown or black tortoiseshell tabby (brown, red or orange, and may have some white)
--Chocolate tortoiseshell tabby (dark brown, red or orange, and some white)
--Cinnamon tortoiseshell tabby (cinnamon, red or orange, and some white)
Diluted Patterns
A dilution gene causes colors to become lighter. The most common diluted patterns of a tortoiseshell tabby are:
--Blue tortoiseshell tabby (blue, cream, and may have some white)
--Lilac tortoiseshell tabby (lilac, cream, and some white)
--Light yellow-brown (fawn) tortoiseshell tabby (fawn, cream, and white)
All these colors appear with a very distinctive tabby pattern. White fur is minimal in tortoiseshell tabbies, and as I mentioned before, the tabby pattern does not show on white fur.
The unique torbie cat also comes in the traditional tabby patterns such as the mackerel and classic patterns.