'Heterochromia' is a term used to describe variations in the color of the iris, the colored portion of the eye. 'Heterochromia' is also used to describe a multi-colored iris within the same eye, or two eyes with distinctly different colored irises. This condition can occur in dogs and cats. Individuals with irises of different colors are common in many dog breeds including Siberian Huskies, Great Danes, Dalmatians, and Malamutes. Vision is completely normal in these individuals and heterochromia is not considered a medical problem but rather a normal variation in eye color.