根据提供的段落纠正语法错误。
All the family members were sitting in the living room, watching TV or reading books. Suddenly a cat who was walking towards her bowl, stops and looks around. It's fur stood on end, and it stared at the window.
All the family members were sitting in the living room, watching TV or reading books when suddenly a cat, who was walking towards her bowl, stopped and looked around. Its fur stood on end, and it stared at the window.