Testing On Impaired Dogs

Many of the impaired dogs included in the Merle paper happened to test with Mh involved.
This was just by chance that these results were found, the paper was never intended to focus on possible impairments.
Further testing on impaired dogs funded by Keller's Cause has shown more interesting results involving Mh.

The following is the list of the original 10 dogs that were included in the Merle paper - 9 have either one or two Mh alleles.

However there are examples of dogs with lesser allele lengths with hearing impairments. 

In conjunction with Keller's Cause we have arranged a GoFundMe fund raising campaign in order to test more vision and/or hearing impaired dogs. 

Note - all 10 impaired dogs that were included in the Merle paper were tested for Piebald. Several of the dogs tested by Keller's Cause were only tested for Merle due to the cost of the added testing for the S Locus.

The following are the results to date on vision and/or hearing impaired dogs that I will divide into groups based on the longest allele.
Any dogs tested for Piebald (S Locus) will have those results noted on the picture.


Ma+ - Longest Allele     Note - both dogs have a Ma+ allele on the border of M.


M - Longest Allele

Unilaterally Deaf - Left Side
Unilaterally Deaf - Left Side
Bilaterally Deaf
Bilaterally Deaf
Bilaterally Deaf - Bilaterally Vision Impaired
Bilaterally Deaf - Bilaterally Vision Impaired
Bilaterally Deaf - Bilaterally Vision Impaired, Sterile
Bilaterally Deaf - Bilaterally Vision Impaired, Sterile

Mh - Longest Allele 

Eye Removed Due To Microphthalmia
Eye Removed Due To Microphthalmia
Bilaterally Deaf - Unilaterally Blind
Bilaterally Deaf - Unilaterally Blind
Bilaterally Deaf - Bilateral Vision Impaired
Bilaterally Deaf - Bilateral Vision Impaired
Bilaterally Deaf - Bilateral Vision Impaired
Bilaterally Deaf - Bilateral Vision Impaired
Bilaterally Vision Impaired
Bilaterally Vision Impaired