I lived in Austin, Texas for about a year spanning Spring 06 to Spring 07. During the last few months of that time we lived in a cute little apartment off the 620 and never had any issues, until we brought an old portrait of a Native American chief from my boyfriend's family last time we visited them. The portrait was displayed on the wall in our master bedroom either on my side of the room or the wall closest to the foot of the bed.
Soon after bringing that item into our home I started not being able to comfortably fall asleep on my own in the bed. I even felt uneasy being in the room in the dark, but I hadn't yet attributed it to the portrait.
Until the morning I was slowly waking up only to be quickly (and rudely!) woken up by a very solid::THUMP:: to my chest. Not the kind you would get from a fist; it was more like when someone uses their index finger and thumb to "flick" you. My eyelids shot open to look at absolutely nothing. I sat up immediately in a panic and a yelp, startling my boyfriend awake (he had been on his side facing away from me). I told him what happened and he said I was imagining things. He went back to sleep but I got up to get ready for the day. There was no way I was getting back to sleep!
There was a decently big walk-in closet attached to the master bedroom by a door which even had it's own light inside. I stepped inside, flipped the light on and shut the door most of the way so the light wouldn't disturb my boyfriend (the closet was on his side of the room). Thinking it was all over and that maybe it was all in my head I started to relax. Half way through getting dressed though, I had someone/thing making a growling noise literally right in my ear! It was as if the thing's "mouth" was no more than an inch from my right ear! Oddly enough, the growl sounded kind of like it was a long drawn out "Hi"...regardless, I screamed, waking my boyfriend up again and bolted out of the closet and jumping over him onto my side of the bed.
Neither of us had any concrete explanation for either incident, but I did make him get rid of that portrait and never had anything happen again.
I have also heard that type of growling up close when no one was beside me (check out my story). It's no wonder you got rid of the painting straight away!