Dog Breathing Heavy In Sleep. If they do wake suddenly from rem because of an interruption , or any other cause it, they may be disoriented for a. The breathing can become harder and faster (tachypnea) the more intense the pain becomes or the longer that the discomfort is there.
Like human babies, puppies sleep most of the day. If your dog breathes fast while sleeping, there can still be other diseases or conditions at play. Fast breathing could be the result of dyspnea (labored breathing.
