There are a very few Arabians registered as "white" having a white coat, pink skin and dark eyes from birth. These animals are believed to manifest a new form of dominant white, a result of a nonsense mutation in DNA tracing to a single stallion foaled in 1996. This horse was originally thought to be a sabino, but actually was found to have a new form of dominant white mutation, now labeled W3. It is possible that white mutations have occurred in Arabians in the past or that mutations other than W3 exist but have not been verified by genetic testing.