Why do dog's eyes reflect green light?

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Offline Geezer

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Why do dog's eyes reflect green light?
« on: 11/04/2010 05:58:40 »
As you can see, Shona has a long face because she does not get red eye with flash photography; she gets green eye instead.


[attachment=11748]



Why's that then? Shona would really like to know.

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Offline RD

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Why do dog's eyes reflect green light?
« Reply #1 on: 11/04/2010 09:28:17 »
She matches the throw better with red eyes ...

[attachment=11750]

But wouldn't have such good night vision ... http://en.wikipedia.org/wiki/Tapetum_lucidum

http://www.thenakedscientists.com/forum/index.php?topic=15699.0
« Last Edit: 11/04/2010 09:37:11 by RD »

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Offline Geezer

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Why do dog's eyes reflect green light?
« Reply #2 on: 11/04/2010 18:50:08 »
Thanks RD! Shona told me to ask you to send a set of the red contacts.
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.

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Offline Karen W.

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Why do dog's eyes reflect green light?
« Reply #3 on: 12/04/2010 00:39:32 »



LOL..LOL That is very interesting, and I wish I had RD's computer skills.. It cracks me up how he can do that with photos..LOL..

By the way,nice Scottish Terrier Geezer! How old is Shona, she looks like she might be mid aged to an older dog....

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Offline Geezer

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Why do dog's eyes reflect green light?
« Reply #4 on: 12/04/2010 00:52:02 »



LOL..LOL That is very interesting, and I wish I had RD's computer skills.. It cracks me up how he can do that with photos..LOL..

By the way,nice Scottish Terrier Geezer! How old is Shona, she looks like she might be mid aged to an older dog....

Shona is just two years old.
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.

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Offline Jessica H

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Why do dog's eyes reflect green light?
« Reply #5 on: 12/04/2010 03:59:22 »
What a cutie!


We get "red-eye" from the reflection off of our blood vessels in the retina. Dogs have a special layer of cells at the back of the eye, though, that reflect light back to the retina in order to help them see in low light, so that's the reflection you're seeing. 

I think it must be the same effect when my cats' eyes glow green when you shine a bit of light at them in a dark room.


http://europuppyblog.com/item/2008/01/why-do-dog-s-eyes-glow-in-the-dark

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Offline Geezer

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Why do dog's eyes reflect green light?
« Reply #6 on: 12/04/2010 06:11:59 »
What a cutie!


We get "red-eye" from the reflection off of our blood vessels in the retina. Dogs have a special layer of cells at the back of the eye, though, that reflect light back to the retina in order to help them see in low light, so that's the reflection you're seeing. 

I think it must be the same effect when my cats' eyes glow green when you shine a bit of light at them in a dark room.


http://europuppyblog.com/item/2008/01/why-do-dog-s-eyes-glow-in-the-dark

Thanks Jessica!

Shona is a great companion. She is quite a character, and very affectionate. Mrs G says Scotties are great.
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.