I've been thinking about getting a second dog to keep my current Shih Tzu company during the day while I'm at work. However, I'm not quite sure if getting a bigger breed such as a Doberman or Rottweiler would be a good idea. I'm worried they might accidentally harm my Shih Tzu or Chihuahua (which is also a possibility) due to their size and strength.
I've heard stories of these breeds being gentle and loving with smaller dogs, but I'm not sure if it's the norm or just an exception. Has anyone had experience with introducing a larger breed to a smaller one? Can they get along well? Should I just stick to small breeds for the safety of my current dog?
Any advice would be greatly appreciated!