Amanda, you and your husband have not assumed a leadership role with this dog - ever - and she has next to no rules in the house. She's sounds like a dominant dog that you've allowed to dominate YOU.

You can't change the dog's temperament, but you can change its relationship to the other members in it's "pack" (ie, you). You're going to need to start at the beginning with this dog - use her crate, put her in there when you're not home, ignore obnoxious behavior and reward calm and quiet, and start doing positively reinforced obedience with her and build a working relationship where nothing in her life is "free" anymore. Basically, what everyone else already mentioned.

In regards to other dogs - almost all of the fights you described could have been easily prevented, but #5 was a COMPLETE repeat of an earlier experience (same dogs, same house, same trigger)... you need to be MUCH more aware of your dog's tendencies (possessiveness/protectiveness), the surrounding environment (her territory + food/toys laying around) and do the best you can to avoid potential conflicts by simply crating your dog and getting her out of any situation where she feels compelled to be aggressive (that's YOUR responsibility to HER).

Read all the great links Alyssa posted - they will help. And don't feel like you can't do this, if you love this dog and want to make it work, you can - she doesn't sound like a bad dog at all, just one who needs more structure and more awareness and diligence on the part of her owners.

Good luck!

~Natalya

I would doubt she's dominant at all. Just has no idea how to behave.

Once the necessary changes are in place, you'll find yourself asking, "How the heck did we ever live with dogs differently?"

 Quote: steve strom

I would doubt she's dominant at all. Just has no idea how to behave.

Quite possible!

~Natalya

 Quote: alyssa myracle

Once the necessary changes are in place, you'll find yourself asking, "How the heck did we ever live with dogs differently?"

Along with, "Why did we train the dog to do this?" :

 Quote: amanda amend

When Angel wants something she will bug you until she gets it. If she wants attention, food, water, or to go outside she will hop in front of you, bark, and just basically bug you until she gets it.

"We trained her to bug us when she wants something by complying when she does bug us. D'oh!"

Alyssa is so right -- your life will change when you become pack leaders. The poor dog's will, too, when she perceives that there actually is some pack structure.