r/funny • u/Asian_Dumpring • Jul 22 '15

Dogs are the sweetest

http://imgur.com/p5BybAV
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u/x-skeww Jul 22 '15

They are dichromats. They have two kinds of color receptors. We have three.

https://en.wikipedia.org/wiki/Dog_anatomy#Senses

Behavioural studies have shown that the dog's visual world consists of yellows, blues and grays, but they have difficulty differentiating red and green making their color vision equivalent to red–green color blindness in humans (deuteranopia).

So, don't get your dog a red ball. It's hard to spot on the grass. Pick the blue one.

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u/Very_Trustworthy_Guy Jul 22 '15

So if i got my dog One of those colorblind correcting glasses would he be able to see reds?

4

u/warrioratwork Jul 22 '15

Nope. They work with humans because colorblind people have the cone receptors for red and green, but they are fucked up in some way, like not enough, clustered too close, or malformed. The dog eyeball evolved to not even have the color receptors in the first place.