I moved out of my parents place November last year and brought my cat with me, he was an outdoor cat and loved adventures. I now live in a condo (4th floor unit), and because it's spring, I sometimes leave the balcony door open (with the screen door closed) and I can see that he really wants to go out and I feel really guilty. My question is: is it ok for cats to move back and forth to 2 places he's lived in? I was thinking of bringing him to my parents place every warmer seasons so he can go out and play anytime he wants and bring him back to my condo come winter time. Is that a good idea?