Dogs see colors differently from humans due to having only two types of color- detecting cones in their eyes, compared to the three types humans have. This gives dogs dichromatic vision, similar to a human with red-green color blindness
. Colors dogs can see:
- Blue and yellow are the primary colors dogs perceive well
- Dogs see various shades of blue clearly, including deep blue and indigo
- Yellow is also prominent in their vision, and many colors in the red, orange, and yellow spectrum appear as shades of yellow to them
Colors dogs have difficulty with or cannot see distinctly:
- Reds and oranges appear as different shades of yellow or brownish yellow
- Greens and greenish hues often appear as shades of gray or white to dogs
- Blues near the green spectrum may fade to gray
In summary, dogs primarily see the world in shades of blue, yellow, gray, and brown, lacking the ability to distinguish reds and greens as humans do
. This explains why blue and yellow toys stand out more to dogs than red or green ones.
