Me and my girlfriend got a purebred doberman pinscher today that is 5 years old. She has been bred once and has a docked tail. The guy we got it from said he was a breeder but we just realized where we saw the ad for the dog pinscher was misspelled three times, so we think it may mean hes lying. But when we first saw her, the whole time we were meeting her, in the car, and for an hour or so in our yard with her she was very sweet and would even follow us around in the yard. But then we went in to make dinner and came back out when it was dark and she has been barking at us every time we go outside. We would just not worry about it for the night since she may not be able to see us in the light but we have a jack russel mix? in a cage at the top of the stairs and we need to let her out to go to the bathroom. What should we do?