[ComfortEagle]

Well... if I were in your position... I wouldn't be using a window fan or anything like that on a ground floor. Remember to keep your windows/doors locked and do not hesitate to call the police if you feel "funny" again! Animals are very intuitive... your "gut feeling" is usually "on the money"... it pays to err on the side of caution!

Yeah, the thing that worried me most were the animals acting odd. Not hanging out downstairs. My cat is usually pretty curious about the window and anything going on outside, so it was odd that he wasn't up on the window seal investigating.