I have 2 boys, 3y ;5.5 lbsand 2y;5 lbs. In December added baby girl. She's now almost 1y and is 3.5 lbs. Up til2 days ago, all was well. She turned suddenly on the 3y old, biting his ear until he was screaming in pain and fear. We could not open her mouth and it was terrible for about 1 min. I immediately crated her, saying bad dog. After 2 hours, took her out, she repeated biting on him. It took 3 of us to pry her off. I re-crated her for the night. Repeated bite attack the next day. She was crated, allowed out to eat and take care of business. Last night, she cried so bad, I put her in bed with me and the boys at 10p,@3a, same aggressive biting, again, only with the 3y old. I have had her in a play pen all day with potty breaks only Any suggestions? I am not having the 3y old abused and terrified, I do love her. The 2y old now spends most of the time hiding
