Wondering about a Mysterious Hole.

My wife and my son wanted to go to the same place this morning, so my son said he would pick her up and they could go together.  Sounds like a plan to me.  Yep, I can stay home and watch TV, play computer games, read blogs, etc.  Maybe even take a little nap.  NO, that plan didn't work out for me.  I was informed that I had to cook for the dogs this morning because they are use to eating at noon and she may not be back in time.  Yes, we cook for our dogs.  I am cooking ground turkey with Ramon noodles and green beans as I write this.  Think I better go check and stir it up a bit.  Be right back.

OK, turned down the heat an let it simmer awhile.

To save my son time, my wife and I walked out to where our driveways come together and waited for him there.  That is where I spotted this strange hole and wondered what or who made it.  It is not very big but it is the shape of a heart.  At least I think it looks like a heart.  Here are a couple of pictures that I took of it wile I waited with the wife:

In the above picture, you can see leaves and grass, which will give you an idea of the size of the hole.  It wasn't very big, probably less than 3 inches wide.  This next picture is a closer view:

OK, can someone tell me what the heck made this hole and what for?  I have never seen a heart shaped hole like that.  It may have just been a fluke that it was shaped that way, you know, kind of like an accident.  Way too big to be from a doodle bug, unless it was one from a galaxy far, far away.  .  .  OK, now you all have a great day today, you hear?