So me and my mom took in a dog for a week while the dog's owners went on vacation for a week, the first time i saw the dog it was friendly, later when I was in my room, the dog frantically started growling and barking at me as soon as he saw me, he even jumped close to me in an attempt to bite, i quickly jumped away and nearly jumped out my window and onto the roof lol, please help me, i have no idea what to do as iam sitting here in my room, :(.