<human>: recently we rescued up a white labradoodle (brody age 4) to join our other dogs, a miniature poodle (boomer age 11), and a black standard poodle (chance age 5) that we got from a reputable breeder in las vegas. when we got brody we knew he was very scared and a bite risk. he was very nervous and wouldn't let anyone touch him when we brought him home. he actually bit my step dad on the drive home from the shelter. brody is what the trainer called "fear aggressive". he always sits near us facing away like he's guarding us from the other dogs. he can't have toys because if we try to grab them away he'll lunge at us. this stuff only happens when the other two are around. when brody is alone he's just a big mush and he barks at just strange noises in the house like hes scared.  he circles chance's crate and barks when they are put away and fight over who gets to lay on my twin bed. sometimes chance snaps and pins brody to the ground and they just growl, bark, and bite each other.

this barking is driving everyone crazy and we need him tame enough to have friends over the house without the risk of a bite. i really don't know which one to discipline or how to really do it.. i just want the end result to be that brody can be let out around strangers and that chance and him stop fighting for attention.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: our new rescue dog is always anxious around new people, scared of noises in the house, and physicaly fights with the other large dog for attention. how do i train them both and deal with the rescue's anxiety?