Is My Dog Protecting Me From A Bad Spirit?

This happened actually, last night. But to understand this, here's some back up information:

We moved into my current house two years ago. I automatically knew we were going to move into it. Just felt it. Three months later, after the move, I've been feeling uneasy in the house, as if someone was watching me. I told my mom and she felt the same way so she burned sage throughout the house and commanded whatever was in the house to get out since we felt it was negative. A little after, it came back and with nothing else we knew we could do, my mom burned sage again and commanded it out and it did leave. For a short amount of time. Again. And came back around a month later.

After six months of this, we decided to get a dog for company. We found my dog, Max, online. My mom wasn't sure if we could afford a dog with our very tight budget so she prayed. She saw a vision of a white dog. She said it looked like a wolf but when I showed her Max, she said the dog looks exactly like the dog she saw in her vision, except my dog has brindle spots on his back, but he was mostly white. We got him and I decided to let him sleep on my bed with me so he wouldn't be lonely and now every time I dream, Max is right next to me in the form my mom described. All white. I am guessing that's his spirit. Can he be my spirit guide?

Once I had a dream that I was sleeping and then Max came in and turned into a human being and touched my forehead. Weird thing was, I actually felt it physically too. With that, a white light came from his hand and spread all of my body, like a force field. I woke up to find Max on the floor just sitting there.

One time, I woke up around 2:00 in the morning to him growling at something in my room. He's not a dumb dog because he understands everything I say and on top of that he's a Border Collie so you know he's not dumb:P but I considered it since he was just barking at air. Then he stood right in front of me and growled at the air, possibly that bad spirit in my house. Then he stopped and went to lay down like nothing happened.

To conclude, I honestly, and this is just a statement, think that my dog is like my guardian. Maybe guardian angel maybe.