Merle is a mottled pattern of different colors. Some of the most common merle patterns include black (blue merle) and liver (red merle). Breeding of two merle dogs can be problematic because of the risk of genetic health risks for the puppies. The possibility of blindness and deafness is higher for puppies who have two merle color parents.
The Australian Shepherd is a dog breed that frequently has a merle coat.« Back to Glossary Index