I had my 6 month old pup on a leash in the living room the other night. My wife was asleep across the room on the couch. My wife woke up and started to walk through the room. My dog went crazy like she wanted to attack her! I couldnt get her to calm down for about a minute. Finally she stopped and my wife approached her and the dog loved on her like she knew she had done wrong. Today my wife was crossing the pups room with a glass bowl and lid, when she stepped over the gate the lid made a clanking sound and the pup did the same thing. She never got close to my wife, just crazy barked at her for a minute. My friend thinks maybe she has an eye sight problem and doesnt see anything till its right up on her.