Mice seem to be able to chew through just about anything. I'm sure they could get through #8 hardware cloth aswell.
This reminds me, back home in Europe, as a kid right after the war. We had a secret pantry, (hiding what little food there was, from Communists!) One day my father got to cursing that one could almost see blue cloud around his head....
A mouse chewed through about 3 feet of mortar and bricks and got right in the midle of a big block of cheese.
Poor bugger must to have worn its' teeth right down to the gums!