How old does a dog need to be for training to start sinking in? I’ve got a 6 month old wolf/german shepherd/husky mix. She’s a wonderful dog but unless we can train her to be less forceful we’ll have to get rid of her. She constantly pulls my fiancé around and has hurt her on more than one occasion. » 3/30/15 12:33pm 3/30/15 12:33pm