White can appear on the legs and body, spreading out from the feet and the center of the sides in ripped patterns.
Irregular white blotches on the face are common. Usually spots around the eyes, ears, and mouth are left unaffected.
Eyes can be blue or heterochromatic.
Overo does NOT extend onto the tail.
May have mapping, thin white roaning around larger white markings
Speckling may form around larger white markings
In hooved creatures, mane is white where skin beneath is affected by O.
Overo is LETHAL in double form, a OO creature will die within a few days of birth due to non-functioning colons