We have always believed that the world of cats and dogs is black and white, but you will be surprised to know that they can see blue and green. Their coloured vision is 1/7th of as vibrant as humans but yes their world has colours.
We use only 3 to 10% of our entire brain is an urban legend that we have believed in since ages.The fact is that most part of our brain is used throughout the day and we couldn’t survive if we scooped out 90% of it.