[Rachel27]

I need help and I need it ASAP. My fixed female rott is approx 17 mos. old. She has NEVER shown any signs of aggression in any way shape or form. She has always been the gentlest most well dispositioned dog. Everyone that has ever met her has said the same. Anyway, what happenned the other night and again tonight SHOCKED me. The first itme I didnt think much of it, but tonight I sure did. When someone knocked at the door, I went to answer it. So did all three dogs, as usual. Well, I opened the door, got the mail from the mailman, heard the dogs barking like crazy, which is normal, but turned around and saw my rott attacking the lab. She was on top of her, grabbing the back of her neck, shaking the hell out of it and growling. I broke it up by squirting vinegar. (The rott is deathly afraid of the vinegar squirt bottle)That was the end of that. Well it happenned again tonight, but worse. I couldnt break them up and couldnt find the water bottle, so I tried to break them up by pushing her with my foot, like an idiot and got bit. Pretty bad, I'm done bleeding now, but it has already bruised and there are four distinct teeth marks in my leg. I realize now that breaking it up was rather stupid on my part, but I've never seen nor broken up a dog fight before, I thought they would stop.

So, why is she doing this now after being so docile all this time, and what should I do to stop it??

I should add that after I broke up the first fight, Roxie, the rott danced around the lab trying to play with her. Right after she attacked her.

I am afraid one of the dogs is going to get seriously hurt, or me.

HELP!!!!