I don't know if you meant this type of stuff too but..My DD5 had some very odd behaviors to sounds and also things. Starting at about 1 year she would run and scream in fear around the house when the trash trucks came on Thrusdays, at first I didn't get what was going on and I would say things like stop having a cow (big mistake) it's just a trash truck. Then everytime she saw a cow on tv she would scream and run around like the cow was going to eat her. Thank goodness she grew out of this, she still is a bit of a nervous nelly, but not to the same extreme.
