It is my understanding that blue eyes are recessive and that to have blue eyes you must have two blue eye genes and no brown eye genes. Perhaps that is only true in humans?
That's true in humans, right. :) Whether or not its true in other species, I'm sure it is, and I believe it is in at least one breed of canine, just not in the dachshund breed. In dachshunds, [theoretically] the only thing that would cause blue in the eyes is dappling, which is an unpredictable dominant trait. That's not to say the blue-eye recessive allele isn't out there, but I've never heard of it appearing in the breed.