One New Year's Eve when I was away, Kara dug her way under the house and escaped (due to being terrified of the fireworks which were going off). My neighbours had to pick her up from the pound the following morning. Apparently the dog catchers are out in force on New Year's Eve because they round up many dogs and impound them! A nice little revenue booster for the local authorities. From memory it cost about $100 to get her back.