It's a common misconception that dogs can only see in black and white, but scientists have proven this to be a myth as dogs can actually see a wide array of colours.
Similar as humans who have red-green colour blindness, dogs struggle to differentiate between various shades of yellow, green and blue.
A Blue Cross statement reads: "Humans have three cones (photoreceptor cells) in their eyes; blue, red and green whereas dogs have two; blue and another that falls between the human red and green cone.
