Have had disturbances in my back yard over the past several months.  I have a chair that I sit in that looks in the direction of some woods that I sit in at times.  I usually just sit and watch and listen.  Well, I went to go to that place not so long ago and I found a large tree limb that had been very obviously broken and then was stuffed into the ground about 12 inches or so.  It was directly in the middle of the path that i use to walk to the above mentioned spot.  I walked around it and made my way to the chair that I usually sit in and what I found made my hair stand on end.  The chair was tipped back with another very large tree limb laying across it.  The chair was broken in two.  AND in the chair seat itself on one half was a pile of perfectly stacked rocks.  Chilling, to say the least.
And last night, around 1 am, my dog began to growl and she was looking in the direction of my bedroom window which looks out towards the woods.  I then hears a loud, and long wailing/howling  noise.  It seemed to last forever.  It was deep.  Not like a high pitched coyote howl.  I then heard another on right after that but more off in the distance.  Then, what seemed very close to the house was a very low, guttural growling sort of noise that made me just about panic.  My dog was really getting upset at this point.  Then it stopped and I didn't hear anything more until about 0315 am when my husband and myself were awoken by what sounded like a handful of pebbles hitting the side of the house.  My husband immediately got up, grabbed his S&W 500 and snuck out the front door to try to sneak up on what may have been out back.  He didn't find anything except that our motion sensor light at the top of our garage was tripped.  Needless to say, it was not a very restful night.