Most of the time my cats are good. there was one instance though that they got out. I had them all in their room with the door closed. I had the window open because they like to sit on the windowsill. Well I was running the dishwasher and didn't hear them making any noise. My fiance came home from work yelling that the cats were outside. I freaked!! They had pushed out the screen on the window and decided to make a break for it! My next door neighbor actually alerted my fiance to my cats in the backyard. 2 jumped back into the window when they saw my fiance, the 3rd he brought in and my abyssinian would not come in. We finally lured him in with cat treats just as a huge truck was coming down the road (which would have scared him so bad he would have definately run away). Needless to say, the screens are all securely in place now. For awhile I didn't open the windows cause I didn't want the same thing happening again, but that has not happened again.
They can be naughty!!!