Merle Havanese dogs have dark, irregular, and mottled markings all over their body. The markings are usually black but may also be red or brown. The rest of the body usually has a white, gray, silver, or off-white coat.
The eyes of Merle Havanese dogs are also unique in that they are sometimes blue in color.
Merle Havanese dogs are beautiful but the genes responsible for their uniqueness are quite problematic.
The merle mutation is associated with eye and ear problems with some merle Havanese dogs suffering either blindness, deafness or both. These conditions are more common with double merle Havanese dogs.