Update:
My duck toller, or whatever he is, is doing great here. At first he cowered when petted, the lady who found him thought he might have been abused. Now he is playing and romping with everyone and having a great time. He still hesitates about coming into the house, I do not know whether maybe he was an 'outside' dog prior to my getting him.
Around the time I brought him home, I had also been talking to another lady about her dog. She had a Great Pyrenees and two other dogs, and the family no longer wanted the Pyr. He is just over a year, and a great dog.
I kept emailing her, and she had not found a home for him and was saying how she thought he was going to be hard to place.
So he's here too.
I am now at my legal and financial limit with 4, but I have to say that they are such a joy. My children are grown and gone and caring for these guys is like having a family again (except that the dogs don't ask for the car keys).
They have arranged themselves in pack order, and I think it is funny that the old Shih Tzu is definitely top dog, he is a fuzzy bit of fluff and a sweet lap dog with me but fearless around the others.
Anyway, I've definitely got a housefull.