The mouse, discovered on Thursday, had thoroughly torn up two bills and damaged another 14 to line his nest. Employee Millie Taylor says she screamed and slammed the machine's door shut.

The bank replaced all the money that wasn't extensively damaged, and the ATM has continued to work just fine. The mouse also got a reprieve: He was evicted from his nest but set free outside the station.

Other workers at the Gem Stop Chevron in La Grande in eastern Oregon say they're mystified about how the mouse got inside the machine.