What color do puppies see in?

Puppies, like adult dogs, are dichromats, meaning they see in two primary colors: blue and yellow.

This is similar to seeing the world in shades of blue, yellow, and gray. They can't see the full spectrum of colors like humans, which are trichromats.

Specifically, they lack the red cone receptors that humans have, so they struggle to differentiate reds and greens.