I second the 3D fencing. It's the cheapest fencing option and it works. Only trouble is that it needs a lot more room than a traditional fence.
As for roaming dogs getting shot and left - why not put them in your freezer, too? They taste great - dog is my favorite red meat.
Did Steve tell you that? Fuh - Steve. Just look at this tiny ad:
Building Your Permaculture Property | Free Permaculture Summit | April 23-25https://permies.com/t/159045/Building-Permaculture-Property-Free-Permaculture