Grab the leash and collar, if he starts whining, walk away and do something else for a minute or so. Try again and continue for s few times. Hopefully it will only take a few days for him to catch on that is he whines he doesn't go out.
Jag.. Jukk Last Van Hauser GSD, K-9
Sable..Dutch Shepherd, Explosives Detection Dog
Arko.. Bane VanDerHaus Bildtunderschrift GSD