We recently got a 3 year old female rescue with no known history. We were told that she was aggressive toward other canines on walks. Having another B that is the same we new how to deal with it. The problem we are having now is aggressive biting when we attempt to put a leash on her. Some days she is fine, but other days she is wild. My partner has been bitten several times and I have come close. We now just put her back in the crate when she acts this way and take the other two out without her. The next walk she goes willingly but then again repeats the cycle.
She seems to have some training (basic commands) and is very food motivated. I fear that putting her in the crate will be associated with punishment.