Hi. Attached are two photos of a hole made in my veggie patch. What could it be? I have seen one bee make a solitary hole near by, but it is tiny. I know I have mice under the garden shed. Could they have moved? I have frogs. Could it be a frog? What else could it be? I don't think it is ants as it's too big and hasn't left an ant hill. Any ideas gratefully received. I won't damage it, I'm just curious. Thanks.