Having someone walk up my stairs and my dogs started freaking out. I was in a back room folding laundry. They were whimpering, whining and in submissive positions with exception of one who was growling. Person came to the top of the stairs and for 5 minutes didnt move, or at least i didnt hear anything. I was too scared to look at first because i thought someone had snuck in. So i grabbed something heavy and waited. After 5 mins the dogs were fine, no one was there, and i was shaking. I looked at the top of the stairs and throughout my house and there was nothing. Everything was locked and i was the only one there.