introducing new dog

Question
Marjorie,
  
I currently have two unneutered dogs.  I have Chulo-a 3yr old Jack Russel, and Lennox, a 2yr old Pit/Lab mix.  We just recently rescued an American Bulldog, his name is Tyson.  Tyson is almost two, and neutered.  Is it going to be possible to get these dogs to get along in your opinion?  Do you have any suggestions, besides me getting my two dogs neutered, (thats getting done next week).  I also understand Tyson still has some hormones in him, he got neutered a month ago.  They do okay when on a leash walking.  We made the mistake of taking them off their leashes too early.  My Lab,Lennox feaked out and bit his buddy Chulo.  Chulo is okay, but I know we tried that way too early.  Like I said we have patience, and Im willing to try whatever, and give this lots of time.  Thank you for your time!
                Hayley

Answer
In my opinion, you've got a ticking time bomb situation. You should have left well enough alone with two males who got along well.  Bringing in a third is a recipe for disaster. Regardless of how they may appear to get along when you are right there, I wouldn't trust them for a second alone, ever. If you're willing to accept the risk that one of these dogs is going to get hurt, all you can do is keep your fingers crossed and your eyes open.