My 17 week old pup has finally realised humans are not chew toys (for the most part anyway) but seems to think my 5 year old is still fair game. We have tried everything from shutting him in another room, yelping and distraction with toys/commands etc but he isn’t getting the message. He full on lunges at her so standing still isn’t an option as he is drawing blood on her arms and legs. They’re not left alone together but he can be asleep on the sofa one minute and she will move and within a split second he’s clamped to her leg (he’s a whippet so very quick). When we’re out walking him off lead, he will be running round the field one minute and next minute he’s after her again. We do put him back on lead as soon as this happens. I really need a solution as she’s becoming frightened of him. Is it possible he still thinks he’s above her in the ranks and if so, how do we put the little blighter back in his rightful place?