This calculator will give you the possible
offspring coat colors and their probabilities when given the parents
coat color and pattern information. For a gray sire or dam, you must
enter what color the horse was before
it went gray as well
as check the box labeled gray to the right of your color selection.
Calculation accuracy of
the offspring color possibilities and probabilities can be greatly increased when providing the color genetics
of the sire and dam.
Q: Where is the color Brown?
A: Brown (and I'm not referring to Seal Brown) is a somewhat ambiguous term used to identify a
number of horse coat colors but most often refers to a dark variation
of Bay. As the genetics behind the variations of the Bay base color
become more understood, we will try to make changes to the calculator
that will incorporate these variations. But for now, selecting Bay
for the color brown will give you the most accurate calculations.
However, colors such as liver chestnut or even smoky black are sometimes
misidentified as brown. In which case Bay would obviously not be
the correct selection.
Q: How do I select Gray for my Sire or Dam?
A: The Gray gene causes the progressive loss of pigment throughout
the horses coat and will affect any color horse. Even though the
horse is gray, it still has all the genetics of the color it was
before going gray. To determine the possible offspring colors that
the gray horse can produce, it is necessary to know what color the
horse was before going gray. To select Gray on the calculator, you
must enter the color and pattern of the horse before going gray
and check the box labeled "Gray".
Q: Where is Chocolate? Where is Taffy?
A: Some horse colors are given different names depending
on the breed of horse or what region of the world the horse is in.
This is the case for Silver Blacks (a black horse with the
silver gene). The most widely accepted name for a silver black is
Silver Dapple but in the Rocky Mountain Horse breed, the color is
often referred to as Chocolate. In Australia, a Silver Black is
referred to as a Taffy. We like to refer to the color as Silver
Black since it best indicated the genetics of the color. A Chocolate Palomino is a dark palomino (a dark red horse with the cream gene) and does not involve the silver gene.
Tell us what you think of the coat calculator!