a black lab. Smelly and shedding everywhere, dandruffy and rather itchy. (This is an emergency look after.) I have brushed him and brushed him and bought new collar (old one was very tight) and walked him across fields which he loved. But he is not used to walks, just let out into yard. So: 1. How far can I walk him without making him worn out? 2. Can I wash him, and if so, with what? Would water on its own make him worse? (Owner has worries enough at the moment- can't bother them). Thanks.