애가 너무 물어대는데 이게 이갈이 때문인지 아니면 버릇이 잘못 든건지 알 수 있는 방법이 있나요 ㅜㅜ 이제는 으르렁대기까지 해서 버릇 잘못 들까봐 무섭네요...