RE: Building the Mobile Pen
Normally I do NOT advocate using chicken wire for prey animal containment. It really is a poor material except in a few specific applications.
We were successful with this because of the momma cows. They'd chase chickens out of the pasture if loose!
The thing about predators ripping it apart is they must have it stable (ie stapled to a frame) and be able to get purchase with the hind legs to pull. This is not stable enough for that.
It's not stable enough for any animal of any weight (raccoon, 10 lbs+) to climb as it would lean back over them, unless they selected a corner.
They could dig under it, but that takes a while and during the day they would be noticed. At night they would have to dig under, then figure out getting through poultry netting on a dedicated charger, then figure out getting into the coop with hardware cloth.
So for this application, it has served well for over a decade.
That makes sense!