Public land: you get what comes along and you pretty much have to grin and bear it. Private land with animal you can't prove isn't feral: buh-bye!
Now if someone's dog was along my road shoulder (the public one, that isn't cabled off) and ran a bit further than I wanted them to while out walking with it's owner. I'd speak to the owner. If I had a known dog that's owner didn't care what it was doing, it's harassing me and infringing upon my right to enjoying my property as I choose.
If it's owner cared so much about their pet, they'd keep it on a leash.
Now here's one that gets funny; "Complainer #2" (neighbors) had two dogs they free ranged so they'd poop elsewhere (they're one cabin away from us). The guy's an ex-cop, and his daughter's a public defender for the county (was at the time, now she works for the Indians). 'Buddy' starts nipping at kiddo's face in the middle of the street, and the ex-cop actually has the balls to say "he thinks it's his turf." I wasn't there or Buddy would've never lived to see what happened later and the true gist of this tale. So a few years go by, Buddy and Ally (their other mutt) get up in age and Ally croaks. Buddy's on a special diet, yet they still let him roam to eat up all the table scraps we left out to feed the wildlife. We "shouldn't leave food out like that if he can get into it." Boo friggen Hoo! So I'm up North around Christmas trying to spear a bruiser the last week of the season, and I figured I'd go for some yotes after New Years since I had one calling really close a couple weeks before that. I'd stopped at the butcher's on my way up to get some trimmings to make a baitcicle with. 2 days wasn't long enough to freeze the water, and the Mrs. calls me to come home since she can't keep any food down. I dumped the bloody brine along my tree line 20 some feet off the pavement in a snow drift. 4 days later Ms. public defender calls leaving a voicemail at our house about "someone dumped rotten meat on our property, and Buddy got into it and got sick all over their floor." I called her back, told her it was me, informed her she was trespassing and so was her dog, and to use a leash. :D Poison's not a legal hunting method, but baiting yotes is. Nothing they could get me on. She pouted a little sigh of disgust before ending the call. That was 5 years ago. Buddy's still alive, and on a leash. :p