Might try that Chell although I have a vague recollection of one of those being mentioned before and they stopped using it. He did go to training classes when he was a puppy and he is great at sitting, staying etc. he will even sit and wait to be told to take his dinner so he can behave when he wants to. It's only when he's out for his walks he becomes a demon and won't listen to anything. He still pulls when out with son but he seems to respond better to him i.e. coming back when he is called etc. When your looking after someone else's dog its difficult because I am afraid he'll get lost and I dont like letting him off his lead in the park but hubby reckons he needs a good run to get rid of his energy. Are the Halti's expensive Chell?

Doreen x