worried for my dogs safety

Question
QUESTION: hello thank you for your time .I have a small toy cha cross pom she is over 4 desexed , I live in a share accomidation we spend alot of time together but  10 to 12 hours a day 5 days a week she is alone, I have decided to adaopt another dog , I love big dogs , so I am worried as I have found a beautiful male 7 year old germen shepard with possible malamute in his breed in a ( adopt a germen shepard) home , I have asked many queries , the lady of the organisation assures me this dog called rock is a beautiffly shy quiet laid back boy whos owner passed away a few months ago. As time grows closer and  he may be moving in with me in two weeks is this a bad decision ?   Im afraid because of my hours at work that the german shepard may bite or worse kill my girl , the lady said I can do a 2 week trial etc but its a big chance to  take can you please guide me
 sincerely jasmine

ANSWER: Do NOT ADOPT THAT DOG!  It's unconscionable for anyone to suggest you take ANY dog home, let alone a seven year old male Shep. mix.  Ten to twelve hours a day alone for ANY dog is far too much.  I understand you have to work, but your Chi mix is already spending far too much time with no companionship and another DOG is NOT the answer!  It's highly unlikely that this Shep. mix is well socialized to other dogs and a toy breed can be seen as PREY by a larger dog.  Even the kindest, sweetest member of a high prey breed (as the Shepherd IS) may perceive a toy dog (having not had socialization to smaller dogs) as PREY and you may get home to find your precious Chi mix severely injured, or worse.  DO NOT DO IT.  A two MINUTE trial could cost your dog her life!

Hire a pet sitter.  Be sure she is bonded and ask for many references; have her come in once a day just to spend a half hour or so with your little dog.  DO NOT GET ANOTHER DOG.

---------- FOLLOW-UP ----------

QUESTION: you have really woried me now this lady said he is a baby of a dog and mixes well with all other breed s that he is submissive and well natured etc that she would be fine with him etc..  

Answer
My first response is similar to that response I had to your original question:

First: is your present dog heavily socialized to other dogs?? Does she spend hours each week in a dog play group or dog park with other dogs, especially large ones?  When was the LAST TIME your present dog interacted with another dog and how did that go?  

Second:  No credible rescue organization that I know of (and I've done pro bono work for some of THE BEST in NY State) would EVER adopt a dog into a home where it was going to be ALONE for ten hours a day, let alone with another dog the rescue organization has not met and evaluated.

Third:  The GSD may be a WONDERFUL dog and I have no doubt that he is; that does NOT mean he is going to be OK with your very small toy dog for TEN LONG HOURS every day!

Your dog must spend time with this rescue dog outside your home; you must evaluate her interaction with him, and his with her; you must set aside at LEAST one week where you can be at home, if you decide to bring him in.  And even then, there is NO GUARANTY these two dogs will cohabit without serious problems and if there ARE serious problems your present dog will suffer the consequences.

I need to impress upon you that your impulse to adopt another dog is NOT for the benefit of your present dog; there's something else going on, and it's about you.  Proceed with caution.