I am going through the same thing with Rigby. The only dog there that she wants anything to do with is the male dachshund. She growls, barks, and snaps at all of the other dogs.
The funniest thing is that she'll growl and snap at another dog, then run behind me to protect her- like, "Oh, shoot- I ran my mouth off again- better take cover."
I'm glad to hear that I'm not alone in this situation- misery loves company. I wonder if spoiled rotten dachsie girls can be fixed?