The results of harlow's experiment were overwhelming with an average infant monkey spending hour(s) per day on the cloth mother and hour(s) per day on the wire mother

Harlow Harlow established the nature of affection by experimenting on infant monkeys responses to compare the influence of nursing from the influence of contact comfort. To study this, he compared a wire mother who provided food, and a cloth mother who did not provide food. The infant monkeys preferred contact comfort and spent more time with the cloth mother than the wire mother.

cats appear to have glowing cat eyes because the back of their eyeballs includes a special reflective surface called the tapetum lucidum. this lets them see better during the night, giving them a much better vision.