Dee Dee,
Most EXCELLENT advise!
One of the primary reasons various breeds show up awaiting rescue or dumped at the pound is that the previous owners didn't investigate the breed and weren't prepared to deal with the breed characteristics once it wasn't a cute, fluffy, gregarious, cuddly, lovable puppy any more!!!
I've owned three "rescue" dogs --- and dealt with many more while I was on the board of the local animal shelter --- and the things people do to dogs (and cats) is beyond belief! Often, the results of that improper first home can have life long devastating results on the animal's personality and psyche.
Dan, before you decide on which dog you want, try to find out what sort of situation she was in and what damage may have been done to her. I still grieve for the beautiful liver & rust doberman ===== that I held in my arms while she was put down because of the behavior that resulted from her ill treatment in the hands of her first owner. She was so scarred and came with so much baggage, that no amount of kindness, love, retraining and even tranquilizers could get past what she had gone through. Sometimes, we can't save them, no matter how much we want to.
DeeDee, whew!! You've had a gen-u-wine ad-vent-shur!! I've only seen it done once (by my mother), but several animal experts have told me that a huge bellow of the word "OUT" and a face-to-face stand when saying it will stop charging dogs. I'm not sure they ever got to what you do once they've paused to think it over 8O Got truly cornered once by surprise by a large size border collie who was loose on unfenced property. Thankfully, the neighbor was home and came and got the dog. No desire to do that again, no sireee! And I'm a dog lover.
Nancy