I'm not sure if this is serious or not. but I have a just under 1 year old white boxer, beautiful dog, I have already lost 1 boxer before, because of a complication at the vets office. I cannot lose another one! Here is the situation. He will just get up from the couch some times and randomly fall down and then when he is down he just sits there and breathes heavily and when I finally get him up he will lean up against anything possible. At first we thought he might have just had hip problems until recently I was sitting on the couch and he fell over like he is sleeping. And I went to shake him and get him up and he was like unconcious and his eyes where fixed in one direction and he did the heavy breathing again. Is this siezures? or what?