I adopted a 3 year old reverse tuxedo(moo cat) cat from a shelter. She has 3 cat castles and more toys (electronic and other) than FAO Schwartz.and several water fountains. While she will play very enthusiastically with these items, she spends a large amount of time at my window trying to get out to chase the squirrels and bunnies that inhabit the large tree in the front of my property and the neighborhood in general. She was a stray before being taken to the shelter. When the weather is a bit warmer I will try a cat harness and take her for walks. I am wondering if anyone has any experience with these once outdoor cars. She has been with me about 6 months and is healthy and happy when I play with her but she always returns to the window. Do once outdoor cats ever adapt to being indoor cats? I am considering adopting a male kitten to keep her company once this COVID nightmare is over. Any thoughts?? My only other cat experience was with a cat raised indoors since a young kitten and was very happy inside.