yup - I had an incident today, and will have to add some security features to an enclosure
one of my newly adopted snakes, a good size eastern female, renamed "You Beast!", got out today
what first alerted me was a congregation of all household cats by the right corner of the piano, but since I didn't see anything, and I do have roaches too, I did a tour of the cages before tearing things apart. I was convinced that it could only be one of the smaller snakes, and then I saw the piece of tail in the middle of the living room floor, and I feared the worst - a badly mangled snake I was going to have to put out of her misery. By then I realized, it was You Beast! who'd gone awol, and I went to pick up some equipment (gloves, paper towels, tongs) while locking the cats into the kitchen
thankfully it turned out okay. I managed to chase her out from under the piano fairly quickly and grab her. Aside from the missing piece of tail there was another small puncture wound on the tail - other than that she seems fine - whew
I am pretty sure the cage getting open was a collaborative effort between the snake and the cats