Wow, Bella did that the second night she was with us, at 8wks old. She was in her crate in our room and I was in bed, my DH was down stairs watching T.V. All of a sudden I heard this loud screetching sound and movement, it kind of sounded like a monkey screech. I jumped out of my bed, afraid of what I might find, and looked into her crate and saw her all standing up all the way in the back of the crate. I also saw that she had peed every where. Don't know what she could have possibly seen in her 8 wks to be afraid of, but I took her out and cuddled with her. LOL, when my DH heard her he came running up and dared to ask me what I did to her! What an absurd question! I knew he was just being protective.