(His final answer: “Hot dogs are hot dog in color.”) “But we also know hot dogs are red (or red-pink at least). So the hot-dog color issue is particularly charged.” ...

It’s not quite as simple as that, but we can compare a dog only seeing blues, yellows, and grays to the vision of a person with red-green color blindness, even if it’s not exactly the same.

Many animals have color preferences. For example advertising research has shown that humans are attracted to the color red. Suppose that you were a dog-toy manufacturer and you wanted to select ...

The dogs were given a choice between three bowls—each a different color—but the same food inside. Surprisingly, the majority picked the same color bowl, even when all options were equal.

"Dogs see a smaller range of colors than people do. We have three types of color-detecting cells (cones) in our eyes that respond to red, blue, and green light, while dogs only have two types of ...

It’s not quite as simple as that, but we can compare a dog only seeing blues, yellows, and grays to the vision of a person with red-green color blindness, even if it’s not exactly the same.

She adds that dogs likely see red and green things as a sort of gray color. She gave the example of a red flower with a green stem in a blue vase.

The team, who published their paper in Animal Cognition, wanted to know if yellow being one of the only colors that dogs can see made it more important to them. So, they worked with 458 free-range ...