I am in Houston and there are coyotes in the middle of the city, they eat cats and small dogs, I have heard. I don’t hear of packs running around and our coyotes are strangely silent. We have hunted in south Texas and heard them yodeling. We have them on our property south of Houston, I wish they would attack the hogs like you say they attack German Shepherds.
Four hundred and six hundred pound German Shepherds moving in small herds would probably be safe from coyotes...