do you suppose it's got something to do with the albino gene? I mean isn't that what makes them a blue merle? Don't they have an albino gene and that's what makes their noses pink, their eyes blue, etc.
This is from an article I read, but it doesn't talk about albino.
"The white or china eye as seen in Siberian Huskies also occurs in Cardigans, but is totally
unrelated to the merle gene. These blue eyes also reflect red in the dark. Brown eyes related
to that condition sometimes reflect red, sometimes green, whereas the brown eyes of blue
merles always reflect red, in my limited experience. I must emphasize that the red reflection
is a rough and ready test for blue merles, but not 100% accurate."
I'm not surprised that he would be outside the norm. So far, nothing with him is simple from his late start on walking to his one undescended testicle and now his eyes. :) Well, I guess that just proves that merles eyes are not red all the time. He is most definitely merle and comes from a good line so I don't know what other explanation there could be. :)
I read through the article again and at one part I think it said that an Ophthalmologist stated that the blue eye of a blue merle will always reflect red but if a brown eye is present it CAN reflect more yellow or green. It sounds like the author just hadn't encountered this personally. Maybe Finn's not so strange after all. :)
The red eye happens to all animals that have tapetum lucidum. Sheep, cats, dogs. It's the way that the light reflects off of this, it is how animals see better in the dark.
According to Wikipedia:
Cats and dogs with blue eyes may display both eyeshine and red-eye effect. Both species have a tapetum lucidum, so their pupils may display eyeshine. In flash color photographs, however, individuals with blue eyes may also display a distinctive red eyeshine. Individuals with heterochromia may display red eyeshine in the blue eye and "normal" yellow / green / blue / white eyeshine in the other eye. These include odd-eyed cats and bi-eyed dogs. The red-eye effect is independent of the eyeshine: in some photographs of individuals with a tapetum lucidum and heterochromia, the eyeshine is dim yet the pupil of the blue eye still appears red. This is most apparent when the individual is not looking into the camera, because the tapetum lucidum is far less extensive than the retina. Eyeglow, which is sometimes seen from cats and dogs, is a result of light bouncing of the tapetum. Animals’ eyes glow as a result. Though eyeshine might seem insalubrious to the animal's health, it is really only a result of light bouncing off the tapetum.