Dog alerts me to some unseen evil

This took place in Parker City, Indiana, but not in the spooky house. My parents were out of town for a couple nights, and I was sleeping in their room with the family dog, Caity. (There wasn't room for her in my twin bed.) In the middle of the night, Caity woke me up barking and snarling ferociously, as she would always do -- much to our mortification -- when visiters would come. She was going ballistic, as usual, and at first I thought she had heard someone in the house, at the door or something. But then I realized she was standing by the bed, looking up into the air over my parents' chest of drawers. I knew instantly, innately, there was something dark there. I lay there in fear, unable to even pray. To pray would be to acknowledge there was something to pray about, and I refused to acknowledge that there really was something in the room. I ordered Caity to get back in bed and be quiet. She reluctantly complied, but was still furiously growling. She continued this until I finally worked up the nerve to say, "Plead the blood." (Pleading the blood -- calling on the power of the blood of Christ.) The minute I said it, Caity went dead silent. Her whole demeanor became peaceful. She then began looking, calmly, from the foot of the bed to the side of the bed, back and forth, back and forth, and I knew angels had come to my defense. I was, however, still too scared and still somewhat in denial. I wanted nothing in the room, not demons, not angels, nothing but me and Caity. I kept pushing her head down, but she would always lift it back up and continue staring peacefully from the edge to the foot of the bed. I lay uncomfortably for probably 30 minutes before I was able to fall back to sleep. That was the only negative experience I had in that house.