While sympathising with the OP on his loss, and we have a similar dog problem, we also have a problem with the neighbours cats roaming free. We feed the small native birds and squirrels and encourage the native lizards (not jing jok or tookay) that eat the insects in the fruit trees. We are daily chasing the cats lying in wait for the birds, squirrels and lizards, so they are a bigger problem than the dogs and their sh#t.
So I hope the OP keeps his cat(s) secured in his own yard so they do not eat the local wildlife creatures in the neighbourhood.