The new DNA test means there is no reason why another English Shepherd Dog ever needs to be born with progressive retinal atrophy, which causes total blindness. Progressive retinal atrophy (PRA) is a ...
The new DNA test means there is no reason why another English Shepherd Dog ever needs to be born with progressive retinal atrophy, which causes total blindness.
The English Shepherd is a breed of herding dog popular in the United States and is closely related to the Border Collie. The new discovery is the thirty-third genetic mutation causing an inherited ...
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