Here is the thing with my sweet cat: Every time around 10-11pm, her pupils dilate and she stars to show me her favorite toy. She won’t play alone with the toy, but she will show me (if she has the chance) that she is in mood for play. If I won’t play with her, she will eventually go to sleep, but she will have an unsettled sleep overnight. Also, she will be less happy. So, how long does she like to play? My cat is 8 years old and she needs to play for about one hour. You might think that one hour is too much. How could you spend…