I said 'ah ah' which I always do when he'd doing something he isn't supposed to do, I tried to steer him out of the room but he just runs under the table (taking the tissue with him!). He isn't toy orientated and I didn't want to give him any treats as I was starving him - saying that, treats usually work.
sometimes needs must
mine never used to be ball oriented but I have worked with them and now Wilf will do more for a tennis ball - sometimes you have to work with them to play.
What training are you doing with him. It may be worth taking time out and doing more with him so he's more bonded and focused on you again
While what he's doing isn't acceptable young cocker males going through adolescence can sometimes be terrible stroppy hooligans.
Even going back to basic training can help and teaching him the odd new thing if you can to stop him getting bored. But short sessions as well - again like any teenage boy his concentration levels may also be all over the place as well.
Have you tried clicker training.
If your dog is just walked to exercise him he may need his brain stimulating as well (tired dogs are less norty as well
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