Typically its a setup similar to this. Snakes, coyotes, and generic being out in the woods with the pups keeps us all on our toes.
The below are my two feral dogs, we "adopted" them, and slowly but steadily they have adopted us in return and joined our larger pack.
My wife wanted to get them DNA tested, and they ended up 3/4 GSD, and 1/4 Border Collie. Smart pups and boundless energy. They are walked using the quads, and they race along at 30mph without any trouble. They enjoy eating veggies, birds, snakes, toads, frogs, lizards, rabbits, ducks, and fish. They wade into ponds and wait in the reeds, then grab aquatic snacks.