Have changed my name but have posted about PuffinCat before. This morning at three am we woke up to PuffinCat screaming and yowling like something else. She's a bit weird normally but the only time I've heard her yowl like that is when one of us has accidentally stepped on her. It went on for one or two minutes and sounded really unpleasant. My first thought was that there was another cat in the house. We rushed downstairs and found her by the patio doors, all puffed up with a tail twice its normal size. She was very unsettled and stayed puffed up for about 15 minutes after. We saw a cat walk off in our garden and in the morning found (large) paw prints. Did PuffinCat just react to her territory being invaded or could there be more to it? She doesn't go outside much so I'm surprised she freaked out like this. Please share your experiences!