My wife was home sick one day and I started to feel sick so I left work early. For some reason I don’t remember why I came in the house through the front door, when I normally came through the garage. Upon hearing the front door open at a random time of the day and being very protective of us especially when sick, my borde collie came running out of the bedroom growling like I had never heard her do before with teeth showing. The second she realized it was me she stopped and came over for pets.