About two past Saturdays I went to the shelter to adopt a dog. I got a dutch shepherd, which is about 1 yrs and some months old, so it has been about two weeks now that she's been with me. I also have a German shepherd who is about 6 years old and he has been living with me for about 6 months. My dutch, which is new to the house, she'll go onto my german's bed and she'll lay on there and won't move even if my german is standing by there, sometimes she'll do her play stance when he comes around, she'll roll around on his bed, or just lay there until i told her to get out of his bed. One time she was laying on there and my german came around and he started showing his teeth, then she started showing her teeth until she was told to get off, and recently she puked on his bed. Also, one time she was laying on his bed then gets off after my german got done drinking water and I saw that she was hiding behind the chair, ducking her head, waiting to see what he would do, but he didn't do anything. She won't go on his bed if he's there but she'll go onto his bed every chance if she can get to it. My question is why is she acting this way as if she claims that bed to be her's.