Think of your pup as having a built-in “vintage filter.” Dogs see the world primarily in shades of blue and yellow. That’s their entire vibrant palette.
They are what scientists call dichromatic. This means they have only two types of color-detecting cells in their eyes, compared to our three (as trichromatic humans).
So, yes, that red ball you love to throw? To your dog, it likely looks like a dull brown or gray blob against the green grass. A bit of a mind-bender, huh?