Has anyone besides me noticed that PBC is constantly getting these first time or new posters with bite /aggression issues? I mean honestly, you hardly ever see it on the other pit bull forums, and it's equally rare on the general dog forum I frequent...is there some sort of internet filter directing people here?????? To the OP...the first scenario...simply sounds...weird. Something is missing. Either the dog gave her an open mouthed, exuberant kiss and accidentally caused a bite (I have been on the receiving end of a "toothy" kiss; and my friend's bully has tried to knock me unconscious giving me a kiss)...or there is additional info we are not privy to. A dog does not go into an unprovoked aggressive frenzy, try to eat your face and then immediately stop and look cowed because someone screamed. It just sounds...off. I am not saying that that isn't how you perceived the interaction...but this is the great thing about invoking a behaviorist...they can see the dog first hand, observe it's behavior, and take an hour or 2 going over with you in minute detail every possible factor and contingency that could have been in play. As to the second situation...some dog's will react when in pain. The whole family checked out the dog's foot. Maybe by the time you got to him his foot was sore from everybody messing with it. Maybe he was just done with everyone messing with his foot and wanted to be left alone. He was shaking, it was clear he had had it at that point. Then you got in his space again...and the lunge was to tell you to back off. Is it good that he did that? NO. On the other hand, I don't know how badly his foot hurt and how aggravated he already was from the rest of the family checking it out...and I don't know how else he would ask for a little private time not being messed with. 3 hours later again freaking and biting your finger badly...again sounds...like we are missing details. However given that you are describing this as new, "out of the blue" behavior...I would say, you have to start with a vet check first to rule out medical issues and get his foot treated. Second I would say, contact a behaviorist or a very knowledgable trainer and have someone actually look at and interact with the dog in question; preferably someone who realizes that it's important to obseve the dog in your home and to see how the dog and your entire family interacts. ---------- Post added at 09:06 AM ---------- Previous post was at 07:51 AM ---------- I just wanted to add that with a bite that severe you will definitely need medical attention. Even if your tetanus is up to date, you will likely need antibiotics. You must have soaked through allot of bandaids. When you go to the ER you'll need to report a dog bite and the dog will need to be quarantined. Some places let you do it in your home...depends.