Poll:Are dogs colour blind?

I guess we all agree, so I wonder who voten colorblind?

I used to think they were (as well as cats) color blind because that's what I had always been told. Then came Domino a Dalmatian I fostered. He hated yellow cars. Any other car that went by didn't seem to bother him, but if a yellow car drove by, he would almost yank my arm off trying to get to the it. I don't know what he thought he was going to do if he ever caught the big bad yellow cars.

As for cats, we had this tortie that would get all excited whenever she saw a Blue Jay in the backyard. We could have a whole yard full of birds, but none got her attention like the "blue ones". She would sit in the window and chatter at them.