I hope not. But one of my cats always try every effort to break down the door to get outside. I don't think that I'm a bad cat parent. But I do have very hard time to keep one of my cats staying indoor. This trouble kid was resucued from the street when he was about 5 to 6 months old. Now he is 4 year old. No matter what I tried to keep him indoor, he always found his way out. I am living in a rented house. I cannot alter any structure of the house or yard. It is impossible for me to close up all windows and doors of the house to keep him inside. I bought toys, cat tunnel, scratch perch for him to play with, He is only interested in his toys for a short while. At night, I closed up all windows and doors of the house. He will open the louver window of the door of the laudry room, jump up on the laudry dryer then climb up to the burglar-proofed gate and go out. We tried to tighted the louver, He tried very hard to open them and he broke the rivet nuts of the loaver. The whole louver fell. So he got out. Any suggestion for me ? What to do to keep him indoor.