Mouse vs. Breaker Panel
Every now and then in this line of business you come across something really special. The picture below is graphic.
At one home inspection I came across a dead mouse in the breaker panel. Who knows how long the carcass had been there. The panel had holes for which wires are introduced into the panel, and from there the mouse had entered . Fortunately, limited damage had occurred within the panel.
This demonstrates that the electrical panel must be sealed for safety.