read the passage. i say that sight is exercised by all animals, by the medium of light. . . . if you choose to say that there are many animals that prey at night, i answer that when the little light which suffices the nature of their eyes is wanting, they direct themselves by their strong sense of hearing and of smell, which are not impeded by the darkness, and in which they are very far superior to man. if you make a cat leap, by daylight, among a quantity of jars and crocks you will see them remain unbroken, but if you do the same at night, many will be broken. –"of the nature of sight," leonardo da vinci what evidence does da vinci offer to support his conclusion that all animals need light to see?