This seems like a simple question with a possible 3 different answers. White, black, or grey. Horse genetics are not that simple. Is the white mare really white or is she a grey that has faded to look white. If she is a grey (which is a dominant gene) the foal has a better than average chance to be grey. There also could be a possible chestnut outcome. In most cases black is a recessive gene so the chance of a black are not as good as grey or chestnut. It would be easier to say one way or another if I knew what color skin the white mare had. But the moral of the story is genetics are a 'crap shoot'. Even people that study equine colors don't have all the answers.
The kind of moth that has black and white wings is called a "panda moth."
There are many, many goats that are black and white.
a zebra is black and white. the print is like black and white strips.
its a Black & White Desert Phase California Kingsnake
Could that be an immature black widow male?
the white house the white house
a dalmatian
there tones
Spiderman
there tones
True Breeding
brown,,, white,, it depends on which kind the bear is....