I have a 7 year old long haired Bassett Hound, and when we go to bed (yes he sleeps in my bed) he sometimes starts to shake and tremble. This is happening more recently and when I put the light on his mouth is usually open as if he is trying to get breath. I have my bedroom window open, so have ruled out that he is too hot. It only happends at bedtime and normally he falls asleep with no problems. He was particularly bad tonight or should I say it is nows 3.00am, and since coming down to see if he needed out (which he did not) he has settled again in the living room. Any ideals B4 I take him to the vet?? I have been waiting nearly 15 mins, do you know how much longer it will take to get an answer?