Dog eyes have more rods than humans ... Human cones can detect 3 colors: red, green, and blue. Dog cones can only detect 2 colors. No one is certain what those 2 colors are.
Dog owners know the pure joy of returning home from a long trip to be greeted by their tail-wagging, uncontrollably jumping, face-licking companion. But those ecstatic canines might be shedding ...
Similar to dogs, cats too can express a range ... and the most striking and unique are red, orange, yellow, and gold. These eyes help them spot their prey and the bright colours serve as a warning ...
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