scratches

My wife and I recently bought a house, a fixer upper for sure but at the price we couldn't really say no. It's a 2 bedroom house where our room and our 2 sons (18 and 8 months) room separated by a hallway with a bathroom in the middle. Everything seems normal, or did, until we got home...

I woke up this morning with unexplained scratches on my arm. It looks like a pitchfork. 3 scratches middle one straight about 4 inches long. The other two are at an angle on either side of the longer scratch about 3 inches long. Sorta looks like a chicken foot. I do have some activity of the...