text: Remember we all have evolved from a wild animals/mammals to what we are today.  Dogs are wild animals that have been domesticated.  Yet, for natural survival their insticts such as hearing and smelling are still somewhat preserved as for defense/survival as well as hunting.  Yes, they do see in black and while (most animals) and color is not important/necessary for those insticts in animals.\n\nWe as a humans have evolved and our brains are more developed (& devloping more than 1000 years ago).  As we have developed other tools, we no longer need those keen senses for survival/hunting etc and we have lost it over time.  In nature's cycle, we no longer need those so it has spent energy in developing brains, hand/eye movement etc..