[AngelBunny]

Canula2000:

"Most of the dog aggression incidences happened during free play time (the first 10 minutes of class). However she has been in two dog fights at my home where I take care of other dogs for rescue work."

One sure way to prevent Fanci from getting into dog fights is to prevent her from romping around with other dogs.

While I expect my [leashed] dogs to behave in public--no barking, lunging, or otherwise acting up at the sight of another dog, I take a dim view of dog parks and free play time. I don't want my dogs to be romping around with bunches of other dogs. They don't need to do this.

Fanci sounds like a dominant girl to me, so curtailing her interaction with the other females in your house would be wise.

And contacting the working dog club that's local to you is an excellent idea.

We have two personal F's and are involved in Rottie rescue. We typically only foster M's because our youngest F thinks she's Ruler of the Universe. Bringing another F into our house would upset the hierarchy and frankly, isn't worth the effort to keep things on an even keel.