* Color vision: Dogs are dichromats, meaning they see in shades of blue and yellow, while humans are trichromats and can see red, green, and blue. This means they don't see the same range of colors as us.
* Sharpness: Their visual acuity is significantly lower than human vision, meaning they don't see as much detail in their environment.
* Motion perception: Dogs are excellent at detecting movement, but their static vision is less sharp.
How do dogs perceive depth?
While their vision is different, dogs still have excellent depth perception. They use various cues to judge distances, including:
* Binocular vision: Like humans, dogs have two eyes that provide overlapping fields of view. This overlap helps them judge distances by comparing the two images.
* Motion parallax: When an object moves, the closer it is, the faster it appears to move relative to the background. Dogs use this to estimate distance.
* Accommodation: Their eyes can adjust their focus, which helps them determine the distance of objects.
In conclusion, while dogs don't see in 3D in the same way that humans do, they have good depth perception and use different cues to navigate their world. Their vision is adapted to their specific needs as a predator, focusing on movement and light changes.