Back in the days, a hospital lab I worked with had a computer room off to the side filled with with PDPs floor to ceiling. One night a rat attempted to crawl though a fan ... CHOMP! and then dead silence with dead rat ... eventually for some reason the temperature in the PDP climbed high enough that the fire suppression system turned on (the days before Freon systems) and the entire room looked like Christmas!
They cleaned it all up with an industrial vacuum cleaner, even had to vacuum out the RK05s but, once the rat was removed, the fan restarted and everything was rebooted ... easy in those days, you just toggled the boot sequence in on the front panel - took about 20 seconds.