Brindle dogs: brindle, reverse brindle and the genetic.

Brindle is a pattern of coloring and markings on the fur of certain types of dogs.  A brindle or inverted brindle pattern is seen in boxers, French bulldogs, and corgis, as well as many other types of dogs.  Labradors cannot color brindles, notes the Boxer World website.  Reverse brindle is not considered a rare pattern, but your dog's brindle can give you an important clue as to whether your dog is a purebred or a mixture.

 Brindle

Boxers come in two colors: fawn and brindle.  The Boxer Club of Canada website describes the fawn as occurring "in tones ranging from light tan to red deer or mahogany, with the deeper colors preferred."  In boxers, the brindle fur has dark bands on a fawn background.  For more information on the subject, do not hesitate, the link.

Any color or pattern of brindle is commonly referred to as brindle, but specific terms have arisen to describe specific patterns and color combinations.  Brindle can be described as “light,” “golden,” “fawn,” “red,” “mahogany,” “dark,” “inverted,” or “sealed,” according to the Boxer World website.

 Reverse brindle

While a regular brindle pattern occurs when dark bands appear against a light colored background, an inverted brindle pattern changes the importance of coloring, so that light bands appear against a dark colored background.  .

In reality, the background fur is always light or fawn in color, but the dark stripes are so prominent that they give the coat its generally darker appearance.  The coloring can even appear almost solid, which makes a boxer look dark in color.  However, boxers that appear black actually have dark brindle fur and the stripes should be visible on close inspection.

Genetic

The brindle pattern in a dog's fur is determined by its genetics.  The brindle gene can be expressed or hidden.  Boxers can only have fawn and brindle coloring or lack of coloring leading to white fur.

The site warns that there are no black boxers as it is a genetic impossibility.  The brindle pattern can affect other patterns on dogs, such as skin pigment color and nail color, according to the D'Accord Frenchies Australia website.