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Originally Posted by InfiniteNothing
I thought the same thing: dogs and cats chase pointers and they are color blind right? I'm pretty sure rods can pick up green rather easily. It's likely that he can see the dot but it just isn't very easy to pick out.
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Dogs are not completely color blind. They do see color, but just not as vividly as humans.
http://www.straightdope.com/classics/a2_004.html
http://www.uwsp.edu/psych/dog/LA/DrP4.htm
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