My family and I got our first puppy in January. He's a Lhasa Apso and about to turn 9 months old in August. When we first got him he had a little trouble sleeping at night but it went away within a day or two. He hasn't really had trouble sleeping since. But all of a sudden he stops sleeping at night, completely. He usually sleeps in a fenced off area but now he'll start whining then progress to uncontrollable barking. My family and I are really tired and frustrated. We've followed pretty much the same routine for months now and he's been getting more exercise incase he has too much pent up energy but nothing seems to be working. Could this be because of the recent heatwave we've been experience? Does anyone know how to get him to sleep at night?!? I'm in desperate need of help, please!!