So, what’s the one color of toy you should never buy for your dog? Many pet companies sell dog toys in bright shades like red ...

How dogs see the world is based on the structure of their eyes. Dogs are dichromats, meaning they only have two color-processing cones, while humans have three. Dogs can see colors, including yellows ...

Many animals have color preferences. For example, some advertising research has suggested that humans are attracted to the color red. Suppose, then, that you were a dog toy manufacturer and you wanted ...