My 10 week old puppy was sitting in her crate yeterday and i was in the room with her. Suddenly she started screaming and when i looked over she had her teeth caught between the bars of the crate. It was a few seconds before I could prise her teeth from the bars and she was screaming the whole time. Now i'm too scared to leave her in her crate on her own in case it happens while i'm out. Has this happened to anyone else?? Since then I have caught her chewing on the bars again so it hasnt frightened her into not chewing them which is what I had hoped. I'd love some advice off someone because her crate training is now not happening. Should I buy a different crate?