Fifty was always trying to run out the door but when he did manage to escape, he would be terrified of the outdoors! But he was so panicky that you couldn't catch him. One time I did manage to grab him and he tore my arm all up in his panic and I had to drop him. Eventually I just gave up chasing him and he would come to the door. It was very stressful! Here at the apartment he only got out a couple times and we were able to get him. Screamer wasn't so inclined to escape, but one time here at the apartment he ran out when I got a delivery but then panicked and ran right back in. The girls have not tried to get out.