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I noticed Sampson's eyes glow red and green in flash photos. I thought at first it was due to the angle of dog to the lens, but it turns out it's due to his left eye being a little different.

sameyes
I don't deliberately take face on flash pix of animals, at the very least it must be a little startling.
I accidently left the flash on when I took this shot.
It seems Sampson is missing the tapetum lucidum in his left eye. This makes his left eye glow red and his right eye glow green. Just like navigation lights on a boat. More information on the tapetum lucidum here. I don't suppose it bothers him and his night vision is very good, he always lets us know when there are foxes in the garden when he's looking out the back window at 3am.
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