Ask McFartnuggets: “Can Dogs See in Color?”

Dear McFartnuggets: 

Is it true that dogs can see in colour? If so what colours can they see?-- Bethany from Manchester, UK

Dear Bethany:

Dog eyes have more rods than human eyes which lets them see better in dark light, but they have fewer cones than humans and those are what help us see color. Dogs only have two types of cones which means they have dichromatic vision and can’t see red and green. They can however see blue and yellow. So basically this means that if you celebrate Christmas with your dog you should have a blue tree with yellow decorations otherwise they’re not really enjoying it as much as they could be. This is also the reason why if you’ve ever let you dog drive you home when you’re too drunk, they usually end up crashing the car. They can’t distinguish between the red and green traffic lights. That’s why you should never give your keys to your dog. It’s a good idea to have a designated driver, but don’t let it be your dog. Maybe when traffic lights are blue and yellow it’ll be okay, until then just don’t do it.

If you've ever noticed how your dog has problems pledging allegiance to the flag, it may be because of color blindness.

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