We have a lot of woodchucks/groundhogs who live in our backyard in the summer months. We have quite a few woodchuck holes here and there, but the holes in the ground really don't bother us much. We know where the holes are, and can avoid them so as not to twist or break our ankles.
We only have male woodchucks, we don't know why. They entertain us with their little territory "fights", which consist of two woodchucks facing each other, puffing up their tails, and then wagging their tails. Eventually they walk or run away from each other. Woodchucks are not mean animals, we have never seen any aggression from them whatsoever. They seem to only eat grass, weeds, and clover. They never disturb our garden, which is close to their homes. When we disturb them by walking into our backyard they run to their homes and hide. We have no females, hence no baby woodchucks The females must live deeper in the woods, I don't know.
As far as we've seen other animals don't bother the woodchucks. Jerry, the outside cat, used to "pretend hunt" the woodchucks ~ he would squat down and try to hide behind some tall grass and watch them for hours before falling asleep. The woodchucks are larger than Jerry, I do not think he could kill a woodchuck. Jerry would take a mouse or a bird without thinking, but not a woodchuck.
This past week, as I was walking in my backyard, I realized a woodchuck had been killed by it's hole. It was awful, body parts scattered around the ground. Hair everywhere. Then I found it's tail. So sad.
It appears the woodchuck hole has been enlarged, dug out by a bigger animal. And the former tenant was killed and his remains scattered about by the doorway into the underground home.
I assume a fox is the culprit. I have recently seen a beautiful red fox in our backyard. I figured he lived deeper in the woods. And I figured he want to be far away from humans, especially since there are so many other woodchuck homes which he could have chosen in the woods. But it appears he chose this home, right in our backyard.
This raises a big concern for my chickens, if foxes are now living right in the backyard. My husband planned on totally free-ranging the chickens eventually, letting them out of their fenced-in area. Maybe not. We will have to keep an eye on the new neighbor for a while to see if he stays and continues to kill the other neighbors.