Hi, would love some advise as I’m looking to buy a Doberman KC registered she’s she’s 8 months old.. very timid her back legs was shaking and not responding much to me calling her name.. her owner said she brought the dog as she wanted to train her to be a security guard dog and was selling as the dog wouldn’t be up to the standard of a security dog.. at first I agreed and took that for gospel.. as she worked as a security dog handler! Then went on to tell me how her ex boyfriend used to beat her other dogs... I asked if this dog had also been beaten! She told me not and he never met this dog... it just didn’t ring true to me.. so my question is firstly.. can a dog just be timid ?? (I don’t believe they are?) can I take this dog a build her confidence up and train her well? Because I am looking for a dog I can train to be a good dog... she was a beautiful dog with a lot of potential I just feel I’m not getting the real story on her back ground! Advise needed as iv only had dogs from puppy’s in the past..