Mole Hole Cleaning

I went to take a closer look at a second mole hole in our backyard and noticed that the mole had done some house cleaning and discarded some detritus. I first thought it was just old grass, weeds and roots, but upon close inspection I discovered some small mammal bones and bits of hair mixed in with the grass. I dug around the pile a bit (which was smelly and had worms digging around in it) and it turned out to be the remains of a rat.

I have no explanation as to why rat remains would be tossed out of a mole hole, or what the rat was doing in there in the first place, or even how it died.

But I love a good mystery.