well before my BT was fully crate trained he used to howl after lights out,,,we used to put him in his crate and as soon as me and my OH went up stairs and turned the lights out he started to howl,,,we tried going in the room and firmly saying 'NO!' and he would go to sleep,,,but 10 mins after he would start again. So we tried leaving old clothes that we had worn in his crate and that never worked either,,,we were about to go as far as muzzleing him at night,,,but i wouldn't do it as he wouldn't be able to pant properly so i was at the end of my teather,,,then after 3 weeks of him doing this he just stopped
honestly he just stopped doing it,,,i don't even know why he stopped or started doing it
,,,but he is very well behaved at night now and just goes straight to sleep,,,so he could just grow out of it (if it is a habit),,,just like mine did
hope it worls out,,,
