much for your quite responses and most excellent advice. Lola was a very nervous puppy when we got her home and it took us a month to get her to trust that nothing horrible was going to happen her when strangers etc came into the house. Now she's feeling her feet she has become boisterous and jumps up on friends etc when they come into the house. We're using the ignore the baby technique to overcome anti social behaviour but she is clinging onto the habit. Her play does become very rough and boisterous and does nip. She's started 'chopsing' and nipping at the air if she doesn't get her own way. I'm not sure is this is a baby's tantrum or the first signs of aggression. I know that being a baby she will push all my buttons to see what she can or can't get away with, but the bouncey tantrums are concerning me. They usually occur after she tries to engage me in boisterous play (nibbling involved) I try to tell her sternly no, and walk away and that is when she amps it up. Is this still her playing ?? To counter this I put her lead on her, make her get off the sofa and I make her sit on the floor until she's calmer. Often she lulls me into a false sense of security and kicks back off again. I admit I try to stay calm but I do get frustrated and end up