Eye Color Genetics and Information
Eye color has been researched, however not as widely as coat color. The responsible genes have not been identified, but the following set of alleles (Ir/ir, m,y) suggested by Burns and Fraser, nicely depict a possibility for the various shades of eye color most commonly seen in dogs:
IrIr very dark brown
Irirm dark brown
Iriry medium brown
irmirm medium light brown
irmiry light brown
Burns and Fraser believe the alleles to be incompletely dominant and Robinson believes that modifiers produce the range of color.
Usually what is seen in the Mudi is that black, white and yellow dogs have the darkest brown eyes. Brown, gray, graybrown and merle dogs have the lightest. Dogs which were born from lighter eyed parents may also have lighter eyes themselves.
Albinos can have blue and pink eyes. Whites can also have blue eyes. It is also possible to have only one blue and one brown or yellow eye as well. Each eye can even be a different shade of the same color.
Merles only can have merled eyes, they are not usually solid blue, they have some spots, specks and flecks of other colors in them. A solid blue eye/s in a solid colored dog does not indicate the dog is a merle. There are 4 possible ways to make blue eyes in a dog, merle is only one of them. If there is doubt, the dog should have the merle gene DNA test done before being bred to another merle dog.
None of the eye colors carry a health risk. Blue eyes are thought to be a little more light sensitive, as is the case in humans. Merled eyes have no more chance for health risk than solid colored eyes, with the exception of Iris Coloboma, which tends to be seen in merles more than solid colored dogs.
Below are pictures of eye colors found on various Mudis. If you have an interesting picture and would like to submit it for this gallery, please send it to:
For more information on eye color, please visit these websites: