Some repair work was being done on our street, Jamie accidentally got out and stuck in a water pipe, and first the fire company had to come, and then the water company, and underground cameras had to be used to locate him. The street had to be dug up because he wouldn't respond to any coaxing. Our pet liability insurance was canceled after payment (in the thousands) had been made, and every attempt to insure him with other companies failed miserably. An insurance broker who lives with one of my former students informed me that that he (Jamie) was blacklisted, although such a list doesn't "officially" exist. Jamie now only goes outdoors on a leash, and we're very careful about doors and windows.
BTW, I wouldn't want to come out either if you had to go looking for me with an underground camera.