Quote: the 2x4 wire is easily torn through as you have mentioned. typically if you line it with poultry netting dogs will give up before they get though. the only "dog proof" wire i have found is 1 inch by 1 inch 16 gauge wire. but for it to work it has to be fastened well, they will still tear it down in sheets. its also expensive, the best price i found was $170.00 for a 100 foot long roll of 36 inch wire.
if your are in an area where there are weasels and mink, they can easily get into the 2x4 wire. a crafty coon can get through in a matter of minutes.
i myself still use it, but only inside my barn. where there isnt any dogs, or coon LOL.