I know its so hard when one dog attacks another. We've had multiple instances where Zeke (we assume he gets jealous..) attacks Bunny out of the blue.. like she's walking across the living room and he's laying down. The next minute he has her pinned against the wall and there are little tufts of B hair on the carpet.. And He's also attacked Eli a couple times. Probably within a month or so that we got Eli.

He never does any major damage.. Eli now has three puncture scars on his right cheek but other than that.. not a big deal. Im not too sure what Zeke's problem is.. or your dog(s) for that matter. I'd just watch them more closely.. We watch Zeke like a hawk.. he does tend to give of a low warning growl before anything else.. so we usually catch it then.

One observation though.. Daisy could have attacked Baby because she saw Baby as weaker than her because she is confined by a muzzle. So Daisy thought that she could gain dominance, etc while Baby was 'weaker'.

Maybe 5 dogs is just too many with your living situation and the certain dogs you have.. I vaguely remember in the last Attack post that you had mentioned you'd be moving out sometime.. And that will definitely help end all of this stress. Maybe you could separate the dogs by baby gates or something.. Not sure what kind of house you are in.. but maybe one group upstairs, and one group downstairs.. Something like that so they wouldn't all be together, at least until they can get along.

I too agree that adding another dog would only worsen the situation.. why add a new dog to a group of unstable dogs.. that'd just create more chaos and problems. And I'll never resort to telling you to get rid of one of them.. It's like giving up a child.

Might just have to invest in multiple muzzles for a while.. =) I see an order for 4 muzzles in your future..
Im sorry that youre in this situation.. and I feel your frustration!