Dogs might only have two cones in their eyes, but are dogs color blind too ... and grays to the vision of a person with red-green color blindness, even if it’s not exactly the same.

red-sensing, green-sensing and blue-sensing cones. Dogs, on the other hand, only have two types of cones in their eyes, which allow them to detect blue and yellow. This limited color perception is ...

Border collies are the world's most intelligent dogs. Their herding ability is exceptional, even when it comes to winged ...