If you read my post from last week desperately asking for advice for agressive pup, this is the follow up! We got on really well with the behaviourist on Thursday -- he thinks all Lily's problems are attention seeking based and her poor ability to deal with frustration. Her attention seeking escalates on an extinction curve -- the more we react to her bad behaviour, the more likely she is to do it again. He suggested ignoring the behaviour which we've found out is easier said than done, as now we are ignoring the chewing shoe laces, jeans etc, her behaviour is getting worse, but she is giving up, eventually!! The biting part is her frustration at not getting her own way, and with regard to putting lead/harness on/off, has introduced clicker training. He's given us things to implement with her but we're waiting for the report to come through sometime this coming week. He also said he is confident that she will come through this and it is definately NOT cocker rage.